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cheet ah 15k.5 sas ST3300655SS st3146855ss st373455ss http://
?2006, 2007, seagate technology llc all rights reserved publication number: 100384784, c february 2007 seagate, seagate technology and the wave logo are registered trademarks of seagate technology llc in the united states and/or other countries. cheetah is either a trademark or registered trademark of seagate technology llc or one of its affiliated companies in the united states and/or other countries. all ot her trademarks or registered trademarks are the property of their respective owners. one gigabyte, or gb, equals one billion bytes when referring to hard drive capacity. accessi - ble capacity may vary depending on operating environment and formatting. quantitative usage examples for various applications are fo r illustrative purposes. actual quantities will vary based on various factors, including file size, file format, features and application soft - ware. seagate reserves the right to change, without notice, product offerings or specifica - tions.
cheetah 15k.5 sas product manual, rev. c i
ii cheetah 15k.5 sas product manual, rev. c
cheetah 15k.5 sas product manual, rev. c i contents 1.0 s c o p e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. 0 s t an d a r d s, co m p lian ce an d r e f e r e n c e d o cu m e n t s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. 1 s t and ards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. 1.1 ele c tr o m a g n e t ic co m p a t ib ility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. 2 com p liance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. 2.1 e l ectr omag netic com p liance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. 3 e u ro pean u n i on r e str i cti on o f h a zard ous s ubsta nces ( r oh s ) . . . . . . . . . . . . . . . . . . . . . 4 2. 4 refe rence docum ents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. 0 ge ner a l d escr ipt i on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3. 1 s t and ard featur es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3. 2 media de scription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3. 3 p e rf orm ance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3. 4 reliab i l i ty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3. 5 f o rm atted capaci t i e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3. 6 p r og ram m abl e dri v e c apaci t y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3. 7 f a ctor y-installed accessor i es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3. 8 op tions (f actor y installed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 0 3. 9 user -insta l l e d accesso ries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4. 0 p e r f o r m a n c e ch ar a c ter i st ics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4. 1 in terna l drive chara c teristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4. 2 s eek t i m e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4. 2.1 a ccess tim e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4. 2.2 f o rm at com m and execut i o n time (min u tes) . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4. 2.3 ge nera l perfo rma nce cha r acte ristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4. 3 s tar t/stop t i m e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 4.4 p r ef etch/m ulti-seg mente d cache contr o l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.5 cach e ope ration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.5.1 cach ing write data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.5.2 prefetch operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5.0 reli ab ili ty sp ecif i cat io n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.1 e r r o r r a tes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.1.1 recoverable errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.1.2 unrecoverable errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.1.3 seek errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.1.4 interface errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.2 r e liability and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.2.1 mean time between failure (mtbf) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.2.2 preventive maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5.2.3 hot plugging the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.2.4 s.m.a.r.t. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.2.5 thermal monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 5.2.6 drive self test (dst) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 5.2.7 product warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6.0 p h ysical/electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 6.1 a c power requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 6.2 d c power requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 6.2.1 conducted noise immunity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 6.2.2 power sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 6.2.3 current profiles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 6.3 p o wer dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
ii cheetah 15k.5 sas product manual, rev. c 6.4 e n viro nmen tal limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6. 4.1 t e mp eratu r e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6. 4.2 relat i ve hum idity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 6. 4.3 e ffective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 6. 4.4 s hock a nd vibr ation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 6. 4.5 a i r clea nliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6. 4.6 cor r osive environ ment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6. 4.7 a c oustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 6. 4.8 ele c tr o m a g n e t ic su sce p t ib ility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 6. 5 m e chani ca l speci f i c ati o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 7. 0 def ect an d er r o r m a n a g e m e n t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 7. 1 dr i v e inter nal def ects/er r or s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 7. 2 d r i v e err o r r e cover y pro c edur es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 7. 3 s a s syste m er r o r s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 7. 4 b a ckgr ound medi a s c a n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 7. 5 m edia p r e - s c an . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 7. 6 defe rre d a u to- r e a llocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 7. 7 id l e r ead a fte r w r i t e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 8. 0 in sta llati o n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 8. 1 dr i v e orien tation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 8.2 coo l in g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 8.3 dr i v e mou n ting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 8.4 gr ound i n g . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 9.0 in ter f a ce r e q u ir e m en ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 9.1 s a s fe atur es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 9.1.1 ta sk management functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 9.1.2 ta sk management responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 9.2 d u a l port suppor t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 9.3 s c s i commands supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 9.3.1 in quiry data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 9.3.2 m ode sense data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 9.4 m i scel laneous operating features and conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 9.4.1 s as physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 9.4.2 p hysical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 9.4.3 con nector requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 9.4.4 e lectrical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 9.4.5 p in descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 9.4.6 s as transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 9.4.7 p ower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 9.5 s i gnal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 9.5.1 rea dy led out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 9.5.2 differ ential signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 10.0 s eag ate technology support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
cheetah 15k.5 sas product manual, rev. c 1 list of figures f i gure 1. c heet ah 15k. 5 sas dis c drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 figure 2. typical ST3300655SS drive +12v current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 6 f i gure 3. t y pic a l ST3300655SS driv e + 5 v cu rrent prof ile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 6 f i gure 4. t y pic a l st3146855ss driv e + 12v cu rrent prof ile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 7 f i gure 5. t y pic a l st3146855ss d r iv e + 5 v cu rrent prof ile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 7 f i gure 6. t y pic a l st373455ss driv e + 12v cu rrent prof ile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8 f i gure 7. t y pic a l st373455ss driv e + 5 v cu rrent prof ile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8 f i gure 8. st 3300655ss ( 3 gbit ) d c c urrent and pow er v s . input / out put operatio ns per s ec ond . . . . . . . . . . . . . . . . . 29 f i gure 9. st 3146855ss (3 gbit ) d c c urrent and pow er v s . input / out put operatio ns per s ec ond . . . . . . . . . . . . . . . . . 30 f i gure 10. st 373455ss (3 gbit ) d c c urrent and pow er v s . input / out put operation s per s ec ond . . . . . . . . . . . . . . . . . . 3 1 fi g u r e 1 1 . l o c a t i o n o f t h e hda t e mp e r a t u r e c h e c k p o i n t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 f i gure 12. r ec om m e nded m ount ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4 fi g u r e 1 3 . p h ys i c a l d i me n s i o n s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 fi g u r e 1 4 . p h ys i c a l i n te r fa c e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1 fi g u r e 1 5 . a i r f l o w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 fi g u r e 1 6 . p h y s i c a l i n te r fa c e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 7 f i gure 17. sas c onnec t or dim ens ions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 f i gure 18. sas c onnec t or dim ens ions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 9 f i gure 19. sas t r ans m i t t ers and rece iv ers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1 fi g u r e 2 0 . re c e i v e e y e ma sk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 fi g u r e 2 1 . re c e i v e to l e r a n c e e y e ma s k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 fi g u r e 2 2 . s i n u s o i d a l j i tte r ma s k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 f i gure 23. c o m p lianc e int e rc onnec t t e s t load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9 f i gure 24. z ero-lengt h t e s t load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 0 fi g u r e 2 5 . is i l o s s e x a m p l e a t 3 .0 g b p s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 0 fi g u r e 2 6 . is i l o s s e x a m p l e a t 1 .5 g b p s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 0
2 cheetah 15k.5 sas product manual, rev. c
cheetah 15k.5 sas product manual, rev. c 1 1.0 scope this manual describes seagate technology ? llc, cheetah ? sas (serial attached scsi) disc drives. cheetah drives support the sas protocol specifications to the extent described in this manual. the sas inter - face manual (part number 100293071) describes the general sas characteristics of cheetah 15k.5 and other seagate sas drives. figure 1. cheetah 15k.5 sas disc drive
2 cheetah 15k.5 sas product manual, rev. c
cheetah 15k.5 sas product manual, rev. c 3 2.0 standards, compliance and reference documents the drive has been developed as a system peripheral to the highest standards of design and construction. the drive depends on its host equipment to provide adequate power and environment for optimum performance and compliance with applicable industry and governmental regulations. special attention must be given in the areas of safety, power distribution, shielding, audible noise control, and temperature regulation. in particular, the drive must be securely mounted to guarantee the s pecified performance characteristics. mounting by bot - tom holes must meet the requirements of section 8.3 . 2.1 standards the cheetah sas family complies with seagate standards as noted in the appropriate sections of this manual and the seagate sas interface manual , part number 100293071. t he c heet ah d i sc d r i v e i s a u l r e cogni ze d compo nent per u l 1950 , c s a ce rti f i ed to c a n / c s a c 22.2 n o . 95 0- 95, and vde certified to vde 0805 and en60950. 2.1.1 electromagnetic compatibility the drive, as delivered, is designed for system integrati on and installation into a suitable enclosure prior to use. the drive is supplied as a subassembly and is not subject to subpart b of part 15 of the fcc rules and regulations nor the radio interference regulations of the canadian department of communications. t he d e si gn ch aract e ri sti cs o f the dri v e serve to m i ni mi ze r adi ati o n w hen i n st al l ed i n an encl o sur e tha t pr ovi des r easona bl e shi e l d i ng. t he dri v e i s cap abl e of me eti ng the c l a ss b l i m i t s of the fc c r u l e s and r egu l a ti ons of th e can adian dep a r t m ent of com m unication s when pr oper l y p a ckag ed; however , it is the user ? s r e sponsibility to a ssure tha t the drive m eet s the app ropr iate e m i req u irem ent s in their system . s h i e lded i/o cab l e s m a y be r equir ed if the enclo sure do es not pr ovide ad equat e shield ing. if t he i/o cable s a r e exte rnal to th e enclosu re, shie l d ed cab l es shou l d be u s ed, w i t h t he shi e l d s gro unded to the encl o su re an d to t he hos t contr o l l e r . 2. 1.1.1 electromagnetic susceptibility a s a com p onent a ssem b ly , the dr ive is n o t r e q u ir ed to m eet an y su sceptibility per for m ance r equir e m e n t s. it is th e r e sponsib i lity of t hose integr ating the drive within th eir systems to p e rfo rm those test s r equir ed a nd d e sign th eir system to ensur e that e quipm ent ope r a ting in t he sam e system as th e dr ive o r exter nal to the sy stem do es not adversely affect the performance of the drive. see tables 2 , 3 and 4 , for dc power requirements.
4 cheetah 15k.5 sas product manual, rev. c 2.2 compliance 2.2.1 electromagnetic compliance seagate uses an independent laboratory to confirm comp liance with the directives/standards for ce marking and c-tick marking. the drive was tested in a representative system for typical applications. the selected sys - tem represents the most popular characteristics for test platforms. the system configurations include: ? typical current use microprocessor ? 3.5-inch floppy disc drive ? keyboard ? monitor/display ?printer ? external modem ?mouse although the test system with this seagate model complie s with the directives/standards, we cannot guarantee that all systems will comply. the computer manufacture r or system integrator shall confirm emc compliance and provide the appropriate marking for their product. electromagnetic compliance for the european union if this model has the ce marking it complies with the european union requirements of the electromagnetic compatibility directive 89/336/eec of 03 may 1989 as amended by directive 92/31/eec of 28 april 1992 and directive 93/68/eec of 22 july 1993. australian c-tick if this model has the c-tick marking it complies with the australia/new zealand standard as/nzs3548 1995 and meets the electromagnetic compatibility (emc) framework requirements of australia?s spectrum man - agement agency (sma). korean mic if this model has the korean ministry of information and communication (mic) logo, it complies with paragraph 1 of article 11 of the electromagnetic compatibility (emc) control regulation and meets the electromagnetic compatibility framework requirements of the radio research laboratory (rrl) ministry of information and communication republic of korea. taiwanese bsmi if this model has two chinese words meaning ?emc certification? followed by an eight digit identification num - ber, as a marking, it complies with chinese national standard (cns) 13438 and meets the electromagnetic compatibility (emc) framework requirements of the taiwanese bureau of standards, metrology, and inspec - tion (bsmi). 2.3 european union restriction of hazardous substances (rohs) t he e u ro pean u n i on r e str i cti on of h a zard ous s ubst ance s (r oh s ) d i r e c ti ve re stri ct s the p r esen ce of ch emi c al substances, including lead (pb), in electronic products effective july 2006. a number of parts and materials in seagate products are procured from external suppliers. we rely on the rep - resentations of our suppliers regarding the presence of rohs substances in these parts and materials. our supplier contracts require compliance with our chemical substance restrictions, and our suppliers document their compliance with our requirements by providing material content declarations for all parts and materials for the disc drives documented in this publication. current supplier declarations include disclosure of the inclusion of any rohs-regulated substance in such parts or materials.
cheetah 15k.5 sas product manual, rev. c 5 seagate also has internal systems in place to ensure ongoing compliance with the rohs directive and all laws and regulations which restrict chemical content in electronic products. these systems include standard operat - ing procedures that ensure that restricted substances are not utilized in our manufacturing operations, labora - tory analytical validation testing, and an internal auditing process to ensure that all standard operating procedures are complied with. 2.4 reference documents cheetah 15k.5 sas installation guide seagate part number: 100384785 scsi commands reference manual seagate part number: 100293068 sas interface manual seagate part number: 100293071 applicable ansi sas documents sff-8323 3.5? drive form factor with serial connector sff-8460 hss backplane design guidelines sff-8470 multi lane copper connector sff-8482 sas plug connector ansi incits.xxx serial attached scsi (sas) standard (t10/1562-d) iso/iec 14776-xxx scsi architecure model-3 (sam-3) standard (t10/1561-d) iso/iec 14776-xxx scsi primary commands-3 (spc-3) standard (t10/1416-d) iso/iec 14776-xxx scsi block commands-2 (sbc-2) standard (t10/1417-d) ansi small computer system interface (scsi) documents x3.270-1996(scsi-3) architecture model specification for acoustic test requirement and procedures seagate part number: 30553-001 package test specification seagate p/n 30190-001 (under 100 lb.) package test specification seagate p/n 30191-001 (over 100 lb.) in case of conflict between this document and any referenced document, this document takes precedence.
6 cheetah 15k.5 sas product manual, rev. c
cheetah 15k.5 sas product manual, rev. c 7 3.0 general description cheetah drives combine perpendicular recording, giant magnetoresistive (gmr) heads, partial response/max - imum likelihood (prml) read channel electronics, embedded servo technology, and a serial attached scsi (sas) interface to provide high performance, high capacit y data storage for a variety of systems including engi - neering workstations, network servers, mainframes, and supercomputers. the serial attached scsi interface is designed to meet next-generation computing demands for performance, scalability, flexibility and high-den - sity storage requirements. c h e e t ah dri v es are ra ndom acce ss stor age devi c es desi g n ed to su ppor t th e s e r i a l a t t a ched s c s i p r otoco l as described in the ansi specifications, this document, and the sas interface manual (part number 100293071) which describes the general interface characteristics of this drive. cheetah drives are classified as intelligent peripherals and provide level 2 conformance (highest level) with the ansi scsi-1 standard. the sas connec - to rs, cabl es a nd el ectr i c al i n terfa c e are co mp ati b l e w i t h s e r i a l a t a ( s a t a ) , gi vi ng fu ture u s ers the ch oi ce of po pulating the i r syste m s with eithe r s a s or s a t a har d d i sc dr ives. t h is allo w s you to co ntinue to lever a ge yo ur existing investment in scsi while gaining a 3gb/s serial data transfer rate. the head and disc assembly (hda) is sealed at the factory. air recirculates within the hda through a non- replaceable filter to maintain a contamination-free hda environment. note. never disassemble the hda and do not attempt to service items in the sealed enclosure (heads, media, actuator, etc.) as this requires special facilities. the drive does not contain user-replaceable parts. opening the hda for any reason voids your warranty. cheetah drives use a dedicat ed landing zone at the innermost radius of the media to eliminate the possibility of destroying or degrading data by landing in the data zone. the heads automatically go to the landing zone when power is removed from the drive. an automatic shipping lock prevents potential damage to the heads and discs that results from movement dur - ing shipping and handling. the shipping lock disengages and the head load process begins when power is applied to the drive. cheetah drives decode track 0 location data from the servo data embedded on each surface to eliminate mechanical transducer adjustments and related reliability concerns. the drives also use a high-performance actuator assembly with a low-inertia, balanced, patented, straight arm design that provides excellent performance with minimal power dissipation.
8 cheetah 15k.5 sas product manual, rev. c 3.1 standard features cheetah drives have the following standard features: ? 1.5 / 3 gbit serial attached scsi (sas) interface ? integrated dual port sas controller supporting the scsi protocol ? support for sas expanders and fanout adapters ? firmware downloadable using the sas interface ? 128 - deep task set (queue) ? supports up to 32 initiators ? jumperless configuration. ? user-selectable logical block size (512, 520, 524, or 528 bytes per logical block) ? perpendicular recording technology ? programmable logical block reallocation scheme ? flawed logical block reallocation at format time ? programmable auto write and read reallocation ? reallocation of defects on command (post format) ? ecc maximum burst correction length of 320 bits ? no preventive maintenance or adjustments required ? dedicated head landing zone ? embedded servo design ? automatic shipping lock ? embedded servo design ? self diagnostics performed when power is applied to the drive ? zone bit recording (zbr) ? vertical, horizontal, or top down mounting ? dynamic spindle brake ? 16 mbyte data buffer (see section 4.5 ). ? drive self test (dst) ? background media scan (bgms) ? power save 3.2 media description the media used on the drive has an aluminum substrate coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection. 3.3 performance ? firmware-controlled multisegmented cache designed to dynamically adjust segments for enhanced system performance. ? 300 mbytes/sec maximum instantaneous data transfers. ? 15k rpm spindle. average latency = 2.0 msec ? background processing of queue ? supports start and stop commands (spindle stops spinning) ? adaptive seek velocity; improved seek performance
cheetah 15k.5 sas product manual, rev. c 9 3.4 reliability ? 1,400,000 hour mtbf (annualized failure rate (afr) of 0.62%) ? incorporates industry-standard self-monitoring analysis and reporting technology (s.m.a.r.t.) ? 5-year warranty 3.5 formatted capacities s t an dard oe m mo del s are for m att ed to 512 byte s pe r bl ock. th e b l ock si ze i s sel e ct abl e at fo rma t ti m e and m u st be a mul t i p l e of 4 bytes. u s ers havi ng the necessar y eq ui pmen t ma y mo di fy the dat a bl ock si ze befo r e issuing a format command and obtain different formatted capacities than those listed. t o p r ovide a st able t a r get cap a city e n vir o n m ent and at t he sam e tim e p r ovide user s with f l e x ibility if they choose, seagate recommends product planning in one of two modes: 1. seagate designs specify capacity points at certain block sizes that seagate guarantees current and future products will meet. we recommend customers use this ca pacity in their project planning, as it ensures a stable operating point with backward and forward compatibility from generation to generation. the current guaranteed operating points for this product are: 2. seagate drives also may be used at the maximum ava ilable capacity at a given block size, but the excess capacity above the guaranteed level will vary between other drive families and from generation to genera - tion, depending on how each block size actually formats out for zone frequencies and splits over servo bursts. this added capacity potential may range from 0.1 to 1.3 percent above the guaranteed capacities listed above. using the drives in this manner gives the absolute maximum capacity potential, but the user must determine if the extra capacity potential is useful, or whether their assurance of backward and for - ward compatibility takes precedence. 3.6 programmable drive capacity using the mode select command, the drive can change its capacity to something less than maximum. see the mode select (6) parameter list table in the sas interface manual , part number 100293071. a value of zero in the number of blocks field indicates that the drive will not change the capacity it is currently formatted to have. a number other than zero and less than the maximum number of lbas in the number of blocks field changes the total drive capacity to the value in the number of blocks field. a value greater than the maximum number of lbas is rounded down to the maximum capacity. 3.7 factory-installed accessories oem standard drives are shipped with the cheetah 15k.5 sas installation guide , part number 100384785, and the safety and regulatory agency specifications , part number 75789512 (unless otherwise specified). capacity (blocks) sector size ST3300655SS st3146855ss st373455ss decimal hex decimal hex decimal hex 512 585,937,500 22ecb25c 286,749,488 11177330 143,374,744 88bb998 520 573,653,847 22314357 280,790,184 10bc84a8 140,395,092 85e4254 524 566,007,800 21bc97f8 275,154,368 106685c0 137,577,184 83342e0 528 557,874,778 21407e5a 272,662,935 10408197 136,331,467 82040cb
10 cheetah 15k.5 sas product manual, rev. c 3.8 options (factory installed) y o u m a y o r d e r th e fo llo win g ite m s wh i c h a r e in co r p o r a t e d a t th e m a n u fa ctu r in g fa cility d u r in g p r o d u ctio n o r packaged before shipping. some of the options available are (not an exhaustive list of possible options): ? other capacities can be ordered depending on sparing scheme and sector size requested. ? s i ngl e- uni t shi ppi n g p a ck. th e dri v e i s n o rm al l y shi pped i n bul k p a ckag i n g to pr ovi de m a xi mum prot ecti on ag ai nst tra n si t dama ge. u n i t s shi pped i n d i vi d ual l y requ i r e add i t i o nal pro t ecti on as pr ovi ded by th e si n g l e uni t shipping pack. users planning single unit distribution should specify this option. ? the cheetah 15k.5 sas installation guide, part number 100384785, is usually included with each standard oem drive shipped, but extra copies may be ordered. ? the safety and regulatory agency specifications , part number 75789512, is usually included with each standard oem drive shipped, but extra copies may be ordered. 3.9 user-installed accessories the following accessories are available. all kits may be installed in the field. ? single-unit shipping pack.
cheetah 15k.5 sas product manual, rev. c 11 4.0 performance characteristics this section provides detailed information concerning performance-related characteristics and features of cheetah drives. 4.1 internal drive characteristics ST3300655SS st3146855ss st373455ss d r iv e c ap ac i t y 300.0 146. 8 73. 4 gby t es (f orm at t ed, rounded of f v a lue) *,** r ead/ w r ite data heads 8 4 2 t r a c k s per s u rf ac e (t ot al) 74, 340 74, 340 74, 340 t r ac k s (user accessible) t r a c k s per inc h 125, 000 125, 000 125, 000 tpi peak bit s per inch 890 890 890 kbpi areal d ens it y 1 10 1 1 0 1 10 gbit s / in c h 2 i nt ernal data rate 960 to 1607 960 to 1607 960 t o 1607 m bit s / s ec (v ariable w i t h z one) d i s c rot at i on s peed 15k 15k 15k r p m a v g rotat i onal lat enc y 2.0 2. 0 2. 0 m s ec * o ne gbyte equa l s one billi o n byt e s when r e f e r r i ng to hard drive capacity . accessible capacity may va ry depending on operating environment and formatting. **rounded off value. 4.2 seek time s ee s e cti on 9.4 . 1, "s a s physi cal interface" on page 57 and the sas interface manual (part number 100293071) for additional timing details. 4.2.1 access time n o t in cl u d i n g co n t r o l l er o ver h ead 1 , 2 (msec) 1. t y pic al ac c es s t i m es are m eas ured under nom inal conditi ons of t em perat ure, v olt age, and horiz ont al orient at ion as m eas ured on a re pres ent at iv e s a m p le of driv es . 2. acce s s t o dat a = ac c es s t i m e + lat enc y t i m e. read w r i t e average typical 3.5 4.0 single trac k typical 0. 2 0. 4 fu l l st roke ty pical 6.8 7.5
12 cheetah 15k.5 sas product manual, rev. c 4.2.2 format command execution time (minutes) execution time measured from receipt of the last byte of the command descriptor block (cdb) to the request for a status byte transfer to the initiator (excluding connect/disconnect). 4.2.3 general performance characteristics 4.3 start/stop time the drive accepts the commands listed in the sas interface manual less than 3 seconds after dc power has been applied. if the drive receives a notify (enable spinup) primitive through either port and has not received a start stop unit command with the start bit equal to 0, the drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure). if the drive receives a start stop unit command with the start bit equal to 0 before receiving a notify (enable spinup) primitive, the drive waits for a start stop unit command with the start bit equal to 1. after receiving a start stop unit command with the start bit equal to 1, the drive waits for a notify (enable spinup) primitive. after receiving a notify (enable spinup) primitive through either port, the drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure). if the drive receives a start stop unit command with the start bit and immed bit equal to 1 and does not receive a notify (enable spinup) primitive within 5 seconds, the drive fails the start stop unit command. ST3300655SS st3146855ss st373455ss maximum (with verify) 120 90 60 maximum (without verify) 60 45 30 sustainable disc transfer rate*: minimum 73 mbytes/sec maximum 125 mbytes/sec sas interface maximum instantaneous transfer rate 300 mbytes/sec* per port (dual port = 600 mbytes/sec*) logical block sizes default is 512-byte data blocks sector sizes variable to 512, 520, 524, and 528 kbytes. read/write consecutive sectors on a track yes flaw reallocation performance impact (for flaws reallocated at format time using the spare sectors per sparing zone reallocation scheme.) negligible average rotational latency 2.0 msec *assumes system ability to support the rates listed and no cable loss.
cheetah 15k.5 sas product manual, rev. c 13 the start stop unit command may be used to command the drive to stop the spindle. stop time is 30 sec - onds (maximum) from removal of dc power. there is no power control switch on the drive. 4.4 prefetch/multi-segmented cache control the drive provides a prefetch (read look-ahead) and mult i-segmented cache control algorithms that in many cases can enhance system performance. cache refers to the drive buffer storage space when it is used in cache operations. to select this feature, the host sends the mode select command with the proper values in the applicable bytes in page 08h. prefetch and cache operations are independent features from the standpoint that each is enabled and disabled independently using the mode select command; however, in actual opera - tion, the prefetch feature overlaps cache o peration somewhat as described in sections 4.5.1 and 4.5.2 . all default cache and prefetch mode parameter values (mode page 08h) for standard oem versions of this drive family are given in section 9.3.2.1 . 4.5 cache operation note. refer to the sas interface manual for more detail concerning the cache bits. of the 16 mbytes physi cal buf f e r sp ace i n the dri v e, ap pr oxi m atel y 13,0 00 kbytes can be used as a cache . t h e buffer is divided into logical segments from which data is read and to which data is written. the drive keeps track of the logical block addresses of the data stored in each segment of the buffer. if the cache is enabled (see rcd bit in the sas interface manual ), data requested by the host with a read command is retrieved from the buffer, if possible, before any disc access is initiated. if cache operation is not enabled, the buffer is still used, but only as circular buffer se gments during disc medium r ead operations (disregarding prefetch operation for the moment). that is, the drive d oes not check in the buffer segments for the requested read data, but goes directly to the medium to retrieve it. the retrieved data merely passes through some buffer segment on the way to the host. all data transfers to the host are in accordance with buffer-full ratio rules. see the explanation provided with the information about mode page 02h (disconnect/reconnect control) in the sas interface manual . the following is a simplified description of the prefetch/cache operation: case a ?read command is received and all of the reques ted logical blocks are already in the cache: 1. drive transfers the requested logical blocks to the initiator. case b ?a read command requests data, and at least one requested logical block is not in any segment of the cache: 1. t he d r ive fe tches t he r equest ed log i ca l blocks f r om the disc and tran sfers them into a segm ent, and t hen from there to the host in accordance with the mode select disconnect/reconnect parameters, page 02h. 2. if the prefetch feature is enabled, refer to section 4.5.2 for operation from this point. each cache segment is actually a self-contained circular buffer whose length is an integer number of logical blocks. the drive dynamically creates and removes se gments based on the workload. the wrap-around capa - bility of the individual segments greatly enhances the cache?s overall performance. note. the size of each segment is not reported by mode sense command page 08h, bytes 14 and 15. the value 0xffff is always reported regardless of the actual size of the segment. sending a size specification using the mode select command (bytes 14 and 15) does not set up a new segment size. if the strict bit in mode page 00h (byte 2, bit 1) is set to one, the drive responds as it does for any attempt to change an unchangeable parameter.
14 cheetah 15k.5 sas product manual, rev. c 4.5.1 caching write data write caching is a write operation by the drive that makes use of a drive buffer storage area where the data to be written to the medium is stored while the drive performs the write command. if read caching is enabled (rcd=0), then data written to th e medium is retained in the cache to be made avail - able for future read cache hits. the same buffer space and segmentation is used as set up for read functions. the buffer segmentation scheme is set up or changed independently, having nothing to do with the state of rcd. when a write command is issued, if rcd=0, the cache is first checked to see if any logical blocks that are to be written are already stored in the cache from a previous read or write command. if there are, the respective cache segments are cleared. the new data is cached for subsequent read commands. if the number of write data logical blocks exceed the size of the segment being written into, when the end of the segment is reached, the data is written into the beginning of the same cache segment, overwriting the data that was written there at the beginning of the operation; however, the drive does not overwrite data that has not yet been written to the medium. if write caching is enabled (wce=1), then the drive may return good status on a write command after the data has been transferred into the cache, but before the data has been written to the medium. if an error occurs while writing the data to the medium, and good status has already been returned, a deferred e rror will be gen - erated. the synchronize cache command may be used to force the drive to write all cached write data to the medium. upon completion of a synchronize cache command, all data received from previous write commands will have been written to the medium. table 9.3.2.1 shows the mode default settings for the drive. 4.5.2 prefetch operation if the p r efet ch fe ature is e nabled , da ta in contigu ous lo gical blo cks on the disc im med i a t ely b e yond that which w a s re quested by a r ead comm and ar e r e tri e ve d a nd store d i n the buf f e r for i m m edi ate tra n sfer fr om the bu f f er to t he h o st o n sub s equen t read com m and s tha t re quest those logical blocks (thi s i s tru e eve n if cache op erat i o n i s di sabl e d ). t houg h the prefe t ch ope rati on us es th e buf fe r as a cache, fi n d i ng th e req uested dat a i n the buffer is a prefetch hit, not a cache operation hit. to enable prefetch, use mode select page 08h, byte 12, bit 5 (disable read ahead - dra bit). dra bit = 0 enables prefetch. the drive does not use the max prefetch field (bytes 8 and 9) or the prefetch ceiling field (bytes 10 and 11). w h e n pr efetch (re ad l o o k -ahe ad) i s ena bl ed ( enab l ed by d r a = 0), the d r i v e e nabl es prefe t ch o f conti g uous blo cks fr om the d i sc whe n it sen s es that a pr e fetch hi t will likely occur . t he dr i v e d i sa bles pr e f etch when it deci des tha t a pr efetch hi t i s no t l i k el y to oc cur .
cheetah 15k.5 sas product manual, rev. c 15 5.0 reliability specifications the following reliability specifications assume correct hos t and drive operational interface, including all inter - face timings, power supply voltages, environmental requirements and drive mounting constraints. 5.1 error rates the error rates stated in this manual assume the following: ? the drive is operated per this specification using dc power as defined in this manual (see section 6.2 ). ? errors caused by host system failures are excluded from error rate computations. ? assume random data. ? default oem error recovery settings are applied. this includes awre, arre, full read retries, full write retries and full retry time. 5.1.1 recoverable errors recoverable errors are those detected and corrected by the drive, and do not require user intervention. recoverable data errors will use correction, although ecc on-the-fly is not considered for purposes of recov - ered error specifications. r eco vered d at a er ror ra te i s de term i ned usi ng re ad bi t s tr ansfer r ed for r ecover abl e er ror s occu rri ng du ri ng a read, and usi n g w r i t e b i ts transf e rre d for reco verab l e err o rs o ccurr i ng du ri ng a w r i t e. 5. 1.2 unrecoverable errors u n recoverable data errors (sense key = 03h) are specified at less than 1 sector in error per 10 16 bits trans - fe rred . unrecoverable data errors resulting from the same cause are treated as 1 error for that block. s eek error rate: less than 10 errors in 10 8 seeks read error rates 1 1. error rate specified with automatic retries and data correction with ecc enabled and all flaws reallocated. recovered data less than 10 errors in 10 12 bits transferred (oem default settings) unrecovered data less than 1 sector in 10 16 bits transferred miscorrected data less than 1 sector in 10 21 bits transferred interface error rate: less than 1 error in 10 12 bits transferred mtbf 1,400,000 hours preventive maintenance: none required
16 cheetah 15k.5 sas product manual, rev. c 5.1.3 seek errors a seek err o r i s defi ned a s a fa i l u r e of the dr i v e to pos i t i on the h eads to the ad dresse d t r ack. a f t e r dete c ti ng an i n i t i a l seek er ror , the dr i v e autom ati c al l y perf o rms an er ror r e cover y p r ocess. if the er ror r e cover y p r ocess fai l s , a se ek positionin g er r o r ( e r r or cod e = 1 5h or 02 h) will be r e p o r t e d wi t h a har d wa r e er r o r ( 04h) i n t he s ense key. recoverable seek errors are specified at less than 10 errors in 10 8 seeks. unrecoverable seek errors (sense key = 04h) are classified as drive failures. 5.1.4 interface errors an interface error is defined as a failure of the receiver on a port to recover the data as transmitted by the device port connected to the receiver. the error may be detected as a running disparity error, illegal code, loss of word sync, or crc error. 5.2 reliability and service you can enhance the reliability of cheetah disc drives by ensuring that the drive receives adequate cooling. section 6.0 provides temperature measurements and other information that may be used to enhance the ser - vice life of the drive. section 8.2 provides recommended air-flow information. 5.2.1 mean time between failure (mtbf) the production disc drive shall achieve a mtbf of 1,400,000 hours when operated in an environment that ensures the hda case temperatures specified in section 6.4 are not exceeded. short-term excursions up to th e spe c ification l i m i ts of the o per a t ing e n vir o n m ent will not af fect m t b f pe r for m ance . con t inual o r su sta i ned op erat i o n at ca se tem pera t ure s above the va l u es show n i n s e cti on 6.4.1 may degrade product reliability. the mtbf target is specified as device power-on hours (poh) for all drives in service per failure. mtbf = estimate power-on operating hours in the period ----------------------------------------------------------------- n u m ber of dr i v e fai l u r e s i n the per i o d estimated power-on operation hours means power-up hours per disc drive times the total number of disc drives in service. each disc drive shall have accumulated at least nine months of operation. data shall be cal - culated on a rolling average base for a minimum period of six months. mtbf is based on the following assumptions: ? 8,760 power-on hours per year. ? 250 average on/off cycles per year. ? operations at nominal voltages. ? systems will provide adequate cooling to ensure the case temperatures specified in section 6.4.1 are not exceeded. drive failure means any stoppage or substanda rd performance caused by drive malfunction. a s.m.a.r.t. predictive failure indicates that the drive is deteriorating to an imminent failure and is considered an mtbf hit. 5.2.2 preventive maintenance no routine scheduled preventive maintenance is required.
cheetah 15k.5 sas product manual, rev. c 17 5.2.3 hot plugging the drive when a disc is powered on by switching the power or hot plugged, the drive runs a self test before attempting to communicate on its? interfaces. when the self test completes successfully, the drive initiates a link reset starting with oob. an attached device should respond to the link reset. if the link reset attempt fails, or any time the drive looses sync, the drive initiated link reset. the drive will initiate link reset once per second but alternates between port a and b. therefore each port will attempt a link reset once per 2 seconds assuming both ports are out of sync.. if the self-test fails, the does not respond to link reset on the failing port. note. it is the responsibility of the systems integrator to assure that no temperature, energy, voltage haz - ar d, or e s d pote n ti al haza r d i s pr esent ed dur i ng the hot con nect/di sco nnect o pera t i on. d i schar ge the static electricity from the drive carrier prior to inserting it into the system. caution. the drive motor must come to a complete stop prior to changing the plane of operation. this time is required to insure data integrity. 5.2.4 s.m.a.r.t. s . m.a . r . t . i s a n a c ronym f o r s e l f -mon i tori ng a nal ysi s and r epor ti ng t e chno l ogy . t h i s techno l o gy i s i n ten ded to r e cogn i z e co ndi ti ons th at i ndi cate i m mi nent d r i v e fai l u r e and i s desi gne d to provi d e suf f i c i ent w a r n i ng of a failure to allow you to back up the data before an actual failure occurs. note. the drive?s firmware monitors specific attributes for degradation over time but can?t predict instanta - neous drive failures. each monitored attribute has been selected to monitor a specific set of failure conditions in the operating per - formance of the drive and the thresholds are optim ized to minimize ?false? and ?failed? predictions. controlling s.m.a.r.t. the operating mode of s.m.a.r.t. is controlled by the dexcpt and perf bits on the informational exceptions control mode page (1ch). use the dexcpt bit to enable or disable the s.m.a.r.t. feature. setting the dex - cpt bit disables all s.m.a.r.t. functions. when enabled, s.m.a.r.t. collects on-line data as the drive performs normal read and write operations. when the perf bit is set, the drive is considered to be in ?on-line mode only? and will not perform off-line functions. y ou can m easur e of f- l i ne attr i butes a nd for c e the dri v e to save the dat a by usi n g the r e zero u n i t co mma nd. forcing s.m.a.r.t. resets the timer so that the next scheduled interrupt is in two hours. you can interrogate the drive through the host to determine the time remaining before the next scheduled mea - surement and data logging process occurs. to accomplish this, issue a log sense command to log page 0x3e. this allows you to control when s.m.a.r.t. interruptions occur. forcing s.m.a.r.t. with the rtz command resets the timer. performance impact s.m.a.r.t. attribute data is saved to the disc so that the events that caused a predictive failure can be recre - ated. the drive measures and saves parameters once ever y two hours subject to an idle period on the drive interfaces. the process of measuring off-line attribute data and saving data to the disc is uninterruptable. the maximum on-line only processing delay is summarized below: m axim u m pr oc essin g d e lay on -lin e o n ly d e la y dex c pt = 0 , pe rf = 1 fu l l y - e na b l ed de l a y dexcpt = 0, perf = 0 s.m.a.r.t. delay times 42 milliseconds 163 milliseconds
18 cheetah 15k.5 sas product manual, rev. c reporting control reporting is controlled by the mrie bits in the informational exceptions control mode page (1ch). subject to the reporting method, the firmware will issue to the ho st an 01-5dxx sense code. the error code is preserved through bus resets and power cycles. determining rate s . m. a . r . t . mo ni tors the ra te at w h i c h e rror s o ccur and si gna l s a pre di c ti ve fai l ure i f the rat e o f de grad ed err ors i n cr eases to an unacce pt abl e l e vel . t o de term i ne rate, er ror even ts ar e l o g ged and com p a r ed to the num ber of to ta l oper ati ons for a gi ve n attr i bute. th e i n ter v al de fi nes th e nu mber of oper ati ons over w h i c h to mea s ure the rate. the co unter that keep s tr ack of th e cur r ent numb e r of oper ati ons i s r e fer r ed to as th e inte rval c o u n ter . s . m. a . r . t . measu r es erro r r a tes. a l l er ror s for each mo n i tored attr i bute are recor ded. a counte r ke ep s tra ck of th e num ber of errors for the current interval. this counter is referred to as the failure counter. e r r or rate is the number of errors per operation. the algorith m that s.m.a.r.t. uses to record rates of error is to set thresholds for the number of errors and their interv al. if the number of errors exceeds the threshold before the interval expires, the error rate is considered to be unacceptable. if the number of errors does not exceed the threshold before the interval expires, the error rate is considered to be acceptable. in either case, the inter - val a nd fa ilure counters are reset and the process starts over. predictive failures s . m. a.r.t. signals predictive failures when the drive is performing unacceptably for a period of time. the firm - ware keeps a running count of the number of times the error rate for each attribute is unacceptable. to accom - plish this, a counter is incremented each time the error rate is unacceptable and decremented (not to exceed zero) whenever the error rate is acceptable. if the counter continually increments such that it reaches the pre - dictive threshold, a predictive failure is signaled. this counter is referred to as the failure history counter. there is a separate failure history counter for each attribute. 5. 2. 5 thermal monitor che e t ah drives implement a temperature warning system which: 1. s i gnals the host if the temperature exceeds a value which would threaten the drive. 2. s i gnals the host if the temperature exceeds a user-specified value. 3. s a ves a s.m.a.r.t. data frame on the drive which exceeds the threatening temperature value. a t e mperature sensor monitors the drive temperature a nd issues a warning over the interface when the tem - perature exceeds a set threshold. the temperature is measured at power-up and then at ten-minute intervals after power-up. t he the rma l monitor system generates a warning code of 01-0b01 when the temperature exceeds the speci - fied limit in compliance with the scsi standard. the drive temperature is reported in the fru code field of mode sense data. you can use this information to determine if the warning is due to the temperature exceeding the drive threatening temperature or the user-specified temperature. t h i s feature is controlled by the enable warning (ewasc) bit, and the reporting mechanism is controlled by the method of reporting informational exceptions field (mrie) on the informational exceptions control (iec) mode page (1ch). t he curr ent al gorithm implements two temperature trip points. the first trip point is set at 68c which is the maximum temperature limit according to the drive specific ation. the second trip point is user-selectable using the log select command. the reference temperature parameter in the temperature log page (see table 1 ) can
cheetah 15k.5 sas product manual, rev. c 19 be use d to set thi s tri p poi nt. t he d e faul t val u e for th i s dri v e i s 68c , how ever , you can set i t to any val u e i n the r ange of 0 to 68c . if yo u speci f y a tem per ature gr eater than 6 8 c i n thi s fi el d , the temp eratu r e i s roun ded down to 68c. a sense code is sent to the host to indicate the rounding of the parameter field. 5.2.6 drive self test (dst) drive self test (dst) is a technology designed to recognize drive fault conditions that qualify the drive as a failed unit. dst validates the functionality of the drive at a system level. there are two test coverage options implemented in dst: 1. extended test 2. short text the most thorough option is the extended test that performs various tests on the drive and scans every logical block address (lba) of the drive. the short test is ti me-restricted and limited in length?it does not scan the entire media surface, but does some fundamental tests and scans portions of the media. if d s t en counte r s a n er ror dur i ng e i t her of th ese t e st s, i t r epor t s a faul t co ndi ti on. if th e dr i v e fa i l s the test, remove it from service and return it to seagate for service. 5.2.6.1 dst failure definition the drive will present a ?diagnostic fail ed? condition through the self-tests results value of the diagnostic log page if a functional failure is encountered during dst. the channel and servo parameters are not modified to test the drive more stringently, and the number of retries are not reduced. all retries and recovery processes are enabled during the test. if data is recoverable, no fa ilure condition will be reported regardless of the number of retries required to recover the data. the following conditions are considered dst failure conditions: ? seek error after retries are exhausted ? track-follow error after retries are exhausted ? read error after retries are exhausted ? write error after retries are exhausted recovered errors will not be reported as diagnostic failures. 5.2.6.2 implementation this section provides all of the information necessary to implement the dst function on this drive. table 1: temperature log page (0dh) parameter code description 0000h primary temperature 0001h reference temperature
20 cheetah 15k.5 sas product manual, rev. c 5.2.6.2.1 state of the drive prior to testing the drive must be in a ready state before issuing the send diagnostic command. there are multiple reasons why a drive may not be ready, some of which are valid conditions, and not errors. for example, a drive may be in process of doing a format, or another dst. it is the responsibility of the host application to determine the ?not ready? cause. while not technically part of dst, a not ready condition also qualifies the drive to be returned to seagate as a failed drive. a drive not ready condition is reported by the drive under the following conditions: ? motor will not spin ? motor will not lock to speed ? servo will not lock on track ? drive cannot read configuration tables from the disc in these conditions, the drive responds to a test unit ready command with an 02/04/00 or 02/04/03 code. 5.2.6.2.2 invoking dst t o i n voke d s t , subm i t the s end d i agnost i c comm and w i t h t he a ppro p ri ate fu ncti on c ode (001 b fo r th e sh ort test or 010b for the extended test) in bytes 1, bits 5, 6, and 7. 5.2.6.2.3 short and extended tests dst has two testing options: 1. short 2. extended these testing options are described in the following two subsections. each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan segment. short test (function code: 001b) t he pu rpo s e of the short test i s to pr ovi d e a ti m e -l i m i t e d test that test s as much of the dr i v e as possi b l e w i t hi n 12 0 se conds. th e sho r t test does not scan the enti r e m edi a surface , b u t d oes so me fund amen ta l test s and scan s p o rti o n s of the m edi a. a com p l e te rea d /ver i f y scan i s not per form ed and onl y factu a l fa i l u r es w i l l re port a fault conditio n. t h i s opti o n pro v i des a q u i ck confi d ence te st of th e dri v e . e x te nd ed t est (function code: 010b) t he obj ecti ve of t he extended test option is to empiricall y test critical drive components. for example, the seek tests and on-track operations test the positioning mechanism. the read operation tests the read head element and the media surface. the write element is tested through read/write/read operations. the integrity of the media is checked through a read/verify scan of the media. motor functionality is tested by default as a part of these tests. t he an ti ci p a ted length of the extended test is reported through the control mode page. 5. 2.6.2. 4 l og p age entries w h e n th e dr ive begins dst, it creates a new entry in the self-test results log page. the new entry is created by inserting a new self-test parameter block at the beginning of the self-test results log parameter section of the log page. existing data will be moved to make room for the new parameter block. the drive reports 20 param - eter blocks in the log page. if there are more than 20 pa rameter blocks, the least recent parameter block will be deleted. the new parameter block will be initialized as follows: 1. t he f uncti on c ode field is set to the same value as sent in the dst command
cheetah 15k.5 sas product manual, rev. c 21 2. the self-test results value field is set to fh 3. the drive will store the log page to non-volatile memory a f ter a sel f - t est i s co mpl e te or h a s been ab orted , t he dri v e upd ates the s e l f -t e s t r e sul t s v a l ue fi el d i n i t s s e l f - t e st r e su l t s log p age i n non- vol a ti l e mem o ry . the ho st m a y u s e l og s e nse to r ead the re sul t s fr om up to the l a st 2 0 sel f -t est s perf o rme d by the dri v e. t he sel f -test r e sul t s val ue i s a 4 - bi t fi el d that r epor ts th e resu l t s o f the te st. if the fi el d i s se t to zero , the dri v e p a ssed w i t h no er rors dete c ted b y the ds t . if th e field is no t set to ze ro, the test failed for the reason reported in the field. t he dr ive will r e p o r t t he failur e con d ition an d lb a ( i f ap plicable) in the s e lf- t est re sults log p a r a m e ter . t h e sense key , a s c , a s c q, and fr u ar e used to r epor t the fa i l u re co ndi ti on. 5. 2.6.2.5 abort t here are several ways to abort a diagnostic. you can us e a scsi bus reset or a bus device reset message to abort the diagnostic. y ou ca n ab ort a d s t execu t i ng i n backg roun d m ode by u s i ng t he a bort code i n the d s t fu ncti on c ode fi el d. t h is will cause a 01 ( s elf- t e st a bor t ed b y th e a pplication client) cod e t o a ppear in the self- t est r e sult s values log . all other abort mechanisms will be reported as a 02 (sel f-test routine was interrupted by a reset condition). 5. 2.7 product warranty b eginning on the date of shipment to the customer and continuing for the period specified in your purchase contract, seagate warrants that each product (including components and subassemblies) that fails to function properly under normal use due to defect in materials or workmanship or due to nonconformance to the applica - ble specifications will be repaired or replaced, at seag ate?s option and at no charge to the customer, if returned by customer at customer?s expense to seagate?s designated facility in accordance with seagate?s warranty procedure. seagate will pay for tr ansporting the repair or replacement item to the customer. for more detailed warranty information, refer to the standard terms and c onditions of purchase for seagate products on your pur - chase documentation. t he r e m a in ing war r ant y for a p a r t i c u l ar d r ive can be d e ter m ined by calling s e agate custom er s e r v i c e at 1- 800-468-3472. you can also determine remaining warranty using the seagate web site (www.seagate.com). the drive serial number is required to determine remaining warranty information. s hipping w hen transporting or shipping a drive, use only a seagate-approved container. keep your original box. seagate approved containers are easily identified by the seagate approved package label. shipping a drive in a non-approved container voids the drive warranty. s eagate repair centers may refuse receipt of components improperly packaged or obviously damaged in tran - sit. contact your authorized seagate distributor to purchase additional boxes. seagate recommends shipping by an air-ride carrier experienced in handling computer equipment. p roduct repair and return information s eagate customer service centers are the only facilit ies authorized to service seagate drives. seagate does not sanction any third-party repair facilities. any unauthor ized repair or tampering with the factory seal voids the warranty.
22 cheetah 15k.5 sas product manual, rev. c
cheetah 15k.5 sas product manual, rev. c 23 6.0 physical/electrical specifications this section provides information relating to the physical and electrical characteristics of the drive. 6.1 ac power requirements none. 6.2 dc power requirements the voltage and current requirements for a single drive are shown below. values indicated apply at the drive connector. gen 1.6 data. 0.15a dc and 0.2a ac 12v max start current margin added. table 2: ST3300655SS dc power requirements notes st 3300655ss 1. 5 gb i t mo d e st 3300655 ss 3 gbi t mo d e (a mp s) (a mp s) (a mp s) (a mp s) voltage +5 v +12v [2] +5 v +12v [2] regulation [5 ] 5 % 5% [2] 5 % 5% [2] avg idle current dc x [1] [6] 0. 76 0. 81 0. 73 0. 80 maximum starting current (peak dc) dc 3 [3 ] 0. 89 1. 97 0. 87 1. 97 (peak ac) ac 3 [3 ] 1. 18 3. 19 1. 38 3. 27 delayed motor start (max) dc 3 [1] [4] 0. 63 0. 03 0. 67 0. 03 peak operating current: t y p i ca l dc x [1 ] 0. 76 1. 14 0. 79 1. 15 ma x i mu m dc 3 [1 ] 0. 77 1. 19 0. 80 1. 18 m a x i m u m (peak) dc 3 1. 54 2. 84 1. 56 2. 80
24 cheetah 15k.5 sas product manual, rev. c gen 1.5 data. 0.15a dc and 0.2a ac 12v max start current margin added. gen 1.6 data. 0.15a dc and 0.2a ac 12v max start current margin added. [1] measured with average reading dc ammeter or equivalent sampling scope. instantaneous +12v current peaks will exceed these values. power supply at nominal voltage. n (number of drives tested) = 6, 35 table 3: st3146855ss dc power requirements no t e s st 3146855ss 1. 5 gb i t mo d e st 314685 5ss 3 gbi t mo d e (a mp s) (a mp s) (a mp s) (a mp s) voltage +5v +12v [2] +5v +12v [2] regulation [5] 5% 5% [2] 5% 5% [2] avg idle current dc x [1] [6] 0.76 0.56 0.75 0.56 maximum starting current (peak dc) dc 3 [3] 0.86 1.97 0.86 1.97 (peak ac) ac 3 [3] 1.17 3.40 1.15 3.34 delayed motor start (max) dc 3 [1] [4] 0.67 0.03 0.70 0.03 peak operating current: t y p i ca l dc x [1] 0.76 0.88 0.80 0.89 ma x i mu m dc 3 [1] 0.78 0.91 0.82 0.91 m a x i m u m (peak) dc 3 1.54 2.48 1.58 2.48 table 4: st373455ss dc power requirements no t e s st 373455ss 1. 5 gb i t mo d e st 373455 ss 3 gbi t mo d e (a mp s) (a mp s) (a mp s) (a mp s) voltage +5v +12v [2] +5v +12v [2] regulation [5 ] 5% 5% [2] 5% 5% [2] a v g idle current dc x [1] [6] 0.76 0.43 0.94 0.43 maximum starting current (p eak d c) dc 3 [3] 0.81 1.90 0.80 1.90 (peak ac) ac 3 [3] 1.27 3.18 1.30 3.22 d e lay ed motor start (max) dc 3 [1] [4] 0.62 0.03 0.64 0.03 peak operating current: t ypi ca l dc x [1] 0.72 0.72 0.76 0.72 ma ximu m dc 3 [1] 0.73 0.80 0.76 0.80 m axi m u m (peak) dc 3 1.54 2.34 1.56 2.36
cheetah 15k.5 sas product manual, rev. c 25 degrees c ambient. [2 ] f or + 12 v , a ?10% to l e ran c e i s al l o w ed duri n g i n i t i a l spi ndl e st art but must retu rn to 5 % be fore rea c hi ng 15,000 rpm. the 5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is able to accept selection by the host initiator. [3] see +12v current profile in figure 2 . [4] this condition occurs after oob and speed negotiation completes but before the drive has received the notify spinup primitive. [5] see paragraph 6.2.1, "conducted noise immunity." specified voltage tolerance includes ripple, noise, and transient response. [6] during idle, the drive heads are relocated every 60 seconds to a random location within the band from three-quarters to maximum track. general dc power requirement notes. 1. minimum current loading for each supply voltage is not less than 1.7% of the maximum operating current shown. 2. the +5v and +12v supplies should employ separate ground returns. 3. where power is provided to multiple drives from a common supply, careful consideration for individual drive power requirements should be noted. where multiple units are powered on simultaneously, the peak starting current must be available to each device. 4. parameters, other than spindle start, are measured after a 10-minute warm up. 5. no terminator power. 6.2.1 conducted noise immunity noise is specified as a periodic and random distribution of frequencies covering a band from dc to 10 mhz. maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power connector. 6.2.2 power sequencing the drive does not require power sequencing. the drive pr otects against inadvertent writing during power-up and down. 6.2.3 current profiles the +12v and +5v current profiles for st3146854ss, st373454ss and st336754ss models are shown below in the following figures. note: all times and currents are typical. see tables 2, 3, and 4 for maximum current requirements. +5v = 250 mv pp from 0 to 100 khz to 20 mhz. +12v = 800 mv pp from 100 hz to 8 khz. 450 mv pp from 8 khz to 20 khz. 250 mv pp from 20 khz to 5 mhz.
26 cheetah 15k.5 sas product manual, rev. c figure 2. typical ST3300655SS drive +12v current profile figure 3. typical ST3300655SS drive +5v current profile
cheetah 15k.5 sas product manual, rev. c 27 figure 4. typical st3146855ss drive +12v current profile figure 5. typical st3146855ss drive +5v current profile
28 cheetah 15k.5 sas product manual, rev. c figure 6. typical st373455ss drive +12v current profile figure 7. typical st373455ss drive +5v current profile
cheetah 15k.5 sas product manual, rev. c 29 6.3 power dissipation ST3300655SS in 3 gbit operation typical power dissipation under idle conditions in 3gb operation is 14.34 watts (48.93 btus per hour). to obtain operating power for typical random read operat ions, refer to the following i/o rate curve (see figure 8 ). locate the typical i/o rate for a drive in your syst em on the horizontal axis and read the corresponding +5 vol t cur r ent, + 12 vol t curr ent, and tot a l w a tt s on the ver t i c al a x i s . t o cal c ul ate b t u s per hou r , m u l t i p l y w a tts by 3.4123. figure 8. ST3300655SS (3 gbit) dc current and power vs. input/output operations per second curre nt / p o w e r v s t hro ug hp ut ( s as - 3 . 0 g b) r a nd om 8 b l oc k r e a d s 0. 0 00 0. 2 00 0. 4 00 0. 6 00 0. 8 00 1. 0 0 0 1. 2 0 0 1. 4 0 0 0. 0 50. 0 1 00. 0 1 50 . 0 200 . 0 2 50. 0 30 0. 0 350 . 0 4 00. 0 i / o s p e r s e c ond amp e r e s 0. 00 2. 00 4. 00 6. 00 8. 00 10 . 0 0 12 . 0 0 14 . 0 0 16 . 0 0 18 . 0 0 20 . 00 p o w e r (w atts) 5vo lt a 12 v o l t a watts
30 cheetah 15k.5 sas product manual, rev. c st3146855ss in 3 gbit operation typical power dissipation under idle conditions in 3gb operation is 11.8 watts (40.27 btus per hour). to obtain operating power for typical random read operat ions, refer to the following i/o rate curve (see figure 8 ). locate the typical i/o rate for a drive in your syst em on the horizontal axis and read the corresponding +5 vol t cur r ent, + 12 vol t curr ent, and tot a l w a tt s on the ver t i c al a x i s . t o cal c ul ate b t u s per hou r , m u l t i p l y w a tts by 3.4123. figure 9. st3146855ss (3 gbit) dc current and power vs. input/output operations per second curre nt / p o w e r v s q ue ue de p t h ( s at a - 3 . 0 g b) r an d o m 128 b l o c k w r i t e/ r ead s 0.000 0. 2 00 0. 4 00 0. 6 00 0. 8 00 1. 0 0 0 1. 2 0 0 1. 4 0 0 0 1 2345 6789 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 q u eu e d ep t h amp e r e s 0. 00 2. 00 4. 00 6. 00 8. 00 10 . 0 0 12 . 0 0 14 . 0 0 p o w e r (w atts) 5vo lt a 12 v o l t a wat t s 14 8 16 3 2
cheetah 15k.5 sas product manual, rev. c 31 st373455ss in 3 gbit operation typical power dissipation under idle conditions in 3gb operation is 10.33 watts (35.25 btus per hour). to obtain operating power for typical random read operat ions, refer to the following i/o rate curve (see figure 8 ). locate the typical i/o rate for a drive in your syst em on the horizontal axis and read the corresponding +5 vol t cur r ent, + 12 vol t curr ent, and tot a l w a tt s on the ver t i c al a x i s . t o cal c ul ate b t u s per hou r , m u l t i p l y w a tts by 3.4123. figure 10. st373455ss (3 gbit) dc current and power vs. input/output operations per second curre nt / p o w e r v s t hro ug hp ut ( s as - 3 . 0 g b) r an d o m 8 b l o ck r ead s 0.0 00 0. 2 00 0. 4 00 0. 6 00 0. 8 00 1. 0 0 0 1. 2 0 0 1. 4 0 0 0 . 0 50. 0 1 0 0. 0 1 50 . 0 200 . 0 25 0. 0 300 . 0 3 50. 0 40 0. 0 i / o s pe r s e c o nd amp e r e s 0. 00 2. 00 4. 00 6. 00 8. 00 10 . 0 0 12 . 0 0 14 . 0 0 p o w e r (w atts) 5vo lt a 12 v o l t a wat t s
32 cheetah 15k.5 sas product manual, rev. c 6.4 environmental limits temperature and humidity values experienced by the driv e must be such that condensation does not occur on any drive part. altitude and atmospheric pressure specifications are referenced to a standard day at 58.7f (14.8c). maximum wet bulb temperature is 82f (28c). 6.4.1 temperature a. operating the maximum allowable continuous or sustained hda case temperature for the rated mtbf is 122f (50c) the maximum allowable hda case temperature is 60c. occasional excursions of hda case tem - pe ratu res above 122 f (50c ) or be l o w 41f ( 5 c ) may occur w i t hou t i m p a c t to speci f i e d m t b f . c o n t i nual or sustained operation at hda case temperatures outside these limits may degrade mtbf. provided the hda case temperatures limits are met, the dr ive meets all specifications over a 41f to 131f (5c to 55c) drive ambient temperature range with a maximum temperature gradient of 36f (20c) per hour. air flow may be needed in the drive enclosure to keep within this range (see section 8.3). operation at hda case temperatures outside this range may adversely affect the drives ability to meet specifications. to confirm that the required cooling for the electronics and hda case is provided, place the drive in its final mechanical configuration, perform random write/read operations and measure the hda case temperature after it has stabilized. b. non-operating ?40 to 158f (?40 to 70c) package ambient with a maximum gradient of 36f (20c) per hour. this specification assumes that the drive is packaged in the shipping container designed by seagate for use with drive. figure 11. location of the hda temperature check point hda temp. check point .5" 1.0"
cheetah 15k.5 sas product manual, rev. c 33 6.4.2 relative humidity the values below assume that no condensation on the drive occurs. a. operating 5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour. b. non-operating 5% to 95% non-condensing relative humidity. 6.4.3 effective altitude (sea level) a. operating ?1,000 to +10,000 feet (?305 to +3,048 meters) b. non-operating ?1,000 to +40,000 feet (?305 to +12,210 meters) 6.4.4 shock and vibration shock and vibration limits specified in this document are measured directly on the drive chassis. if the drive is installed in an enclosure to which the stated shock and/or vibration criteria is applied, resonances may occur internally to the enclosure resulting in drive movement in excess of the stated limits. if this situation is apparent, it may be necessary to modify the enclosure to minimize drive movement. t he l i m i t s of shock and vi br ati on de fi ned w i t hi n thi s do cumen t are spe c i f i e d w i t h the dri v e m ounte d by any of the four methods shown in figure 12 , and in accordance with the restrictions of section 8.3 . 6.4.4.1 shock a. operating?normal t he dri v e, as i n sta l l ed f o r norm a l op erat i o n, s hal l op erat e er ror fr ee w h i l e sub j e c ted to i n term i ttent shock not exce edi ng 1 5 gs at a m a xi mum dur ati on of 1 1 msec ( hal f si new ave ) . t he dr i v e , as i n st al l ed fo r nor mal op erat i o n, sha l l o pera t e er ror free w h i l e subj e c ted to i n term i ttent shock no t excee d i ng 60 gs at a maxi m u m duration of 2 msec (half sinewave). shock may be applied in the x, y, or z axis. b. operating?abnormal equipment, as installed for normal operation, does not incur physical damage while subjected to intermit - tent shock not exceeding 40 gs at a maximum durati on of 11 msec (half sinewave). shock occurring at abnormal levels may promote degraded operational performance during the abnormal shock period. speci - fied ope r a tion al per for m ance w ill co ntinue when n o r m al ope r a ting shock le vels r e sum e . s h ock m a y be applied in the x, y, or z axis. shock is not to be repeated more than two times per second. c. non-operating the limits of non-operating shock shall apply to all conditions of handling and transportation. this includes both isolated drives and integrated drives. the drive subjected to nonrepetitive shock not exceedi ng 75 gs at a maximum duration of 11 msec (half sinewave) shall not exhibit device damage or performance degradation. shock may be applied in the x, y, or z axis. the drive subjected to nonrepetitive shock not exceeding 250 gs at a maximum duration of 2 msec (half sinewave) does not exhibit device damage or performance degradation. shock may be applied in the x, y, or z axis. the drive subjected to nonrepetitive shock not exceeding 120 gs at a maximum duration of 0.5 msec (half sinewave) does not exhibit device damage or performance degradation. shock may be applied in the x, y, or z axis.
34 cheetah 15k.5 sas product manual, rev. c d. packaged disc d r ives shipped as l o ose lo ad ( not p a lletized) gen er al fr eig h t will be p a ckag ed t o withst and dr op s fr om he i ght s as de fi ned i n t he t abl e b e l o w . fo r add i t i onal de ta i l s r e fer to s eaga te speci f i c a t i ons 30 190- 001 (under 100 lbs/45 kg) or 30191-001 (over 100 lbs/45 kg). drives packaged in single or multip acks with a gross weight of 20 pounds (8.95 kg) or less by seagate for general freight shipment shall withstand a drop test fr om 48 inches (1,070 mm) against a concrete floor or equivalent. figure 12. recommended mounting package size packaged/product weight drop height <600 cu in (<9,800 cu cm) any 60 in (1524 mm) 600-1800 cu in (9,800-19,700 cu cm) 0-20 lb (0 to 9.1 kg) 48 in (1219 mm) >1800 cu in (>19,700 cu cm) 0-20 lb (0 to 9.1 kg) 42 in (1067 mm) >600 cu in (>9,800 cu cm) 20-40 lb (9.1 to 18.1 kg) 36 in (914 mm) z y x z y x
cheetah 15k.5 sas product manual, rev. c 35 6.4.4.2 vibration a. operating?normal the drive as installed for normal operation, shall co mply with the complete specified performance while subjected to continuous vibration not exceeding 10-500 hz @ 0.5 g (zero to peak) vibration may be applied in the x, y, or z axis. operating normal translational random flat profile 10 - 500 hz 0.4 grms b. operating?abnormal equipment as installed for normal operation shall not incur physical damage while subjected to periodic vibration not exceeding: 15 minutes of duration at major resonant frequency 10-500 hz @ 0.75 g (x, y, or z axis) vibration occurring at these levels may degrade operational performance during the abnormal vibration period. specified operational performance will conti nue when normal operating vibration levels are resumed. this assumes system recovery routines are available. operating abnormal translational random flat profile 10 - 500 hz 1.2 grms c. non-operating the limits of non-operating vibration shall apply to all conditions of handling and transportation. this includes both isolated drives and integrated drives. the drive shall not incur physical damage or degraded performance as a result of continuous vibration not exceeding 5-22 hz @ 0.040 inches (1.02 mm) displacement (zero to peak) 22-500 hz @ 2.00 g (zero to peak) vibration may be applied in the x, y, or z axis. non-operating translational random flat profile 10 - 500 hz 1.2 grms 6.4.5 air cleanliness the drive is designed to operate in a typical office environment with minimal environmental control. 6.4.6 corrosive environment seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to light industrial environments containing sulfurous gases, chlorine and nitric oxide, classes g and h per astm b845. however, this accelerated testing cannot duplicate every potential application environment. users should use caution exposing any electronic components to uncontrolled chemical pollutants and corro - sive chemicals as electronic drive component reliability can be affected by the installation environment. the sil - ver, copper, nickel and gold films used in seagate products are especially sensitive to the presence of sulfide, chloride, and nitrate contaminants. sulfur is found to be the most damaging. in addition, electronic components should never be exposed to condensing water on the surfac e of the printed circuit board assembly (pcba) or exposed to an ambient relative humidity greater than 95%. materials used in cabinet fabrication, such as vulca - nized rubber, that can outgas corrosive compounds should be minimized or eliminated. the useful life of any electronic equipment may be extended by replacing materials near circuitry with sulfide-free alternatives.
36 cheetah 15k.5 sas product manual, rev. c 6.4.7 acoustics sound power during idle mode shall be 3.6 bels typical when measured to iso 7779 specification. sound power while operating shall be 4.3 bels typical when measured to iso 7779 specification. there will not be any discrete tones more than 10 db above the masking noise on typical drives when mea - sured according to seagate specification 30553-001. there will not be any tones more than 24 db above the masking noise on any drive. 6.4.8 electromagnetic susceptibility see section 2.1.1.1. 6.5 mechanical specifications refer to figure 13 for detailed physical dimensions. see section 8.3, ?drive mounting.? figure 13. physical dimensions height: 1.028 in 26.11 mm width: 4.010 in 101.85 mm depth: 5.787 in 146.99 mm weight: 1.85 pounds 0.839 kilograms 26.1 1 max (1.028 max) 2x 20.14 (2x .793) 6.35 (.250) 24.00 (.945) 2x 28.45 (2x 1.120) 2x 70.05 (2x 2.758) 122.00 (4.803) 2x 130.05 (2x 5.120) 0.36 ( .014) 146.99 max (5.787 max) 131.17 (5.164) 85.60 (3.370) 41.15 (1.620) 2x 29.21 (2x 1.150) 1.45 (.057) 3.17 (.125) 20.14 (.793) 50.80 (2.000) 101.60 +/- .25 (4.000 +/- .010) 2x 100.13 (2x 3.942) 98.42 (3.875) 20.68 (.814) 33.40 (1.315) 0.76 ( .030) 0.13 (.005) 0.13 (.005) 3.50 +/- .38 (.138 +/- .015) 0.25 (.010) 0.99 (.039) 0.41 (.016) 36.37 (1.432) 4.57 min blind ( .18 min blind) 0.36 ( .014) units of measure: mm (inches) drive center line 4.22 x 90 ( .166 x 90 ) 4.22 x 90 ( .166 x 90 )
cheetah 15k.5 sas product manual, rev. c 37 7.0 defect and error management seagate continues to use innovative technologies to manage defects and errors. these technologies are designed to increase data integrity, perform drive se lf-maintenance, and validate proper drive operation. scsi defect and error management involves drive in ternal defect/error management and sas system error considerations (errors in communications between the initiator and the drive). in addition, seagate provides the following technologies used to increase data integrity and drive reliability: ? background media scan (see section 7.4 ) ? media pre-scan (see section 7.5 ) ? deferred auto-reallocation (see section 7.6 ) ? idle read after write (see section 7.7 ) the read error rates and specified storage capacities are not dependent on host (initiator) defect management routines. 7.1 drive internal defects/errors during the initial drive format operation at the factory, media defects are identified, tagged as being unusable, and their locations recorded on the drive primary defects list (referred to as the ?p? list and also as the etf defect list). at factory format time, these known defects are also reallocated, that is, reassigned to a new place on the medium and the location listed in the defects reallocation table. the ?p? list is not altered after factory formatting. locations of defects found and reallocated du ring error recovery procedures after drive shipment are listed in the ?g? list (defects growth list). the ?p? and ?g? lists may be referenced by the initiator using the read defect data command. d e t a i l s of the s c s i comm ands supp orte d by the dri v e a r e descr i bed i n the s a s inte rface m anua l . a l s o , mo re information on the drive error recovery philosophy is presented in the sas interface manual . 7.2 drive error recovery procedures when an error occurs during drive operation, the drive, if programmed to do so, performs error recovery proce - dures to attempt to recover the data. the error recovery procedures used depend on the options previously set in the error recovery parameters mode page. error recovery and defect management may involve using sev - eral scsi commands described in the sas interface manual . the drive implements selectable error recovery time limits required in video applications. the error recovery scheme supported by the drive provides a way to control the total error recovery time for the entire command in addition to controlling the recovery leve l for a single lba. the total amount of time spent in error recovery for a command can be limited using the recovery time limit bytes in the error recovery mode page. the total amount of time spent in error recovery for a single lba can be limited using the read retry count or write retry count bytes in the error recovery mode page.
38 cheetah 15k.5 sas product manual, rev. c the drive firmware error recovery algorithms consists of 11 levels for read recoveries and five levels for write. each level may consist of multiple steps, where a step is defined as a recovery function involving a single re- read or re-write attempt. the maximum level used by the drive in lba recovery is determined by the read and write retry counts. table 5 equates the read and write retry count with the maximum possible recovery time for read and write recovery of individual lbas. the times given do not include time taken to perform reallocations. reallocations are performed when the arre bit (for reads) or awre bit (for writes) is one, the rc bit is zero, and the recov - ery time limit for the command has not yet been met. time needed to perform reallocation is not counted against the recovery time limit. whe n the rc bit is one , r ealloca tions ar e disabled even if the a rre or a w r e bit s ar e one. t he dr ive will still pe rfor m d a t a re cover y acti ons w i t hi n th e l i m i t s d e fi ned by th e r ead r e tr y c ount , w r i t e r e try c o unt, and recovery time limit parameters. however, the drive does not report any unrecovered errors. [1] these values are subject to change. setting these retry counts to a value below the default setting could result in degradation of the unrecov - ered error rate which may exceed the value given in this product manual. a setting of zero (0) will result in the drive not performing error recovery. for example, suppose the read/write recovery page has the rc bit set to 0, read retry count set to 4, and the recovery time limit field (mode sense page 01, bytes 10 and 11) set to ff ff hex (maximum). a four lba read command is allowed to take up to 253.11 msec recovery time for each of the four lbas in the command. if the recovery time limit is set to 00 c8 hex (200 msec decimal) a four lba read command is allowed to take up to 200 msec for all error recovery within that command. the use of the recovery time limit field allows finer granularity on control of the time spent in error recovery. the recovery time limit only starts counting when the drive is executing error recovery and it restarts on each command. there - fo re, ea ch comm and? s tot a l re covery ti m e i s su bj ect to the recove ry ti me l i m i t . n o te: a r e cover y ti me l i m i t o f 0 will u se th e d r ive ? s d e f a u l t va lu e o f f f f f . m i n i m u m r e co ve r y tim e li m i t is a ch i e ve d b y se tt i n g th e recovery ti me li m i t fi el d to 00 01 . t a ble 5: read and write retry count maximum recovery times read retry count 1 ma x i mu m re c o v e r y t i me pe r l b a (cu m u l at ive, m sec) write retry count 1 maxim u m r eco ver y tim e p er lb a (c um ulat ive, m sec ) 0 51. 87 0 23. 94 1 59. 85 1 35. 91 2 203. 49 2 55. 86 3 219. 45 3 67. 83 4 253. 1 1 4 1 19.79 5 279. 35 5 (def ault ) 147.72 6 31 1. 27 7 395. 12 8 463. 12 9 495. 04 10 530. 95 1 1 (default) 1, 282. 97
cheetah 15k.5 sas product manual, rev. c 39 7.3 sas system errors in form ati on on th e rep o rti n g o f oper ati onal er ror s or fau l t s acr o ss the i n te rface i s gi ven i n t he s a s inter f ace m anual . the s s p r e spon se re turns i n form ati on to the host a bout nume r ous ki n d s of e rro rs or faul t s . t h e receive diagnostic results reports the results of diagnostic operations performed by the drive. status returned by the drive to the initiator is described in the sas interface manual. status reporting plays a role in systems error management and its use in that re spect is described in sections where the various com - mands are discussed. 7.4 background media scan background media scan (bms) is a self-initiated media scan. bms is defined in the t10 document spc-4 available from the t10 committee. bms performs seque ntial reads across the entire pack of the media while the drive is idle. in raid arrays, bms allows hot spare drives to be scanned for defects prior to being put into service by the host system. on regular duty drives, if the host system makes use of the bms log page, it can avoid placing data in suspect locations on the medi a. unreadable and recovered error sites will be logged or reallocated per arre/awre settings. with bms, the host system can consume less power and system overhead by only checking bms status and results rather than tying up the bus and consuming power in the process of host-initiated media scanning activ - ity. since the background scan functions are only done during idle periods, bms causes a negligible impact to sys - tem performance. the first bms scan for a newly manufactured drive is performed as quickly as possible to verify the media and protect data by setting the ?start time after idle? to 5ms, all subsequent scans begin after 500ms of idle time. other features that normally use idle time to function will function normally because bms functions for bursts of 800ms and then suspends activity for 100ms to allow other background functions to operate. b m s i n ter r upt s i m m edi atel y to se rvi c e host com m an ds fr om t he i n ter f ace bus w h i l e pe rfor mi ng r eads. b m s w i l l com p l e te a n y b m s - i n i t i a ted err o r re covery p r i o r to retu rni ng t o servi c e h o st-i ni ti at ed com m and s. overh ead asso ci ated w i t h a ret u rn to h o st-se r vi ci ng acti vi ty fr om b m s onl y i m p a ct s th e fi r s t com m and tha t i n te rrup t ed bms, this results in a typical delay of about 1 ms. 7.5 media pre-scan m edi a p r e-s c an i s a featur e that al l o w s the dri v e to re p a i r medi a er ror s th at w oul d other w i s e h a ve been fo und by the host system dur in g cr itica l dat a accesses ear l y in th e dr ive? s life. t he defa u lt sett i n g fo r m edia p r e- s c an is ena bled on st anda rd pr oduct s . med i a p r e-s c an checks ea ch write comm and to d e term ine if the destin a tion lb a s ha ve b een scanned by b m s . if the lb a s have been ver i f i ed, t he d r i v e proce eds w i t h the nor mal w r i t e com m an d. if th e l b a s h a ve not been ver i fied by b m s , p r e- s c an will con v er t the wr ite to a wr ite v e r i fy to c e r t ify that the data was properly written to the disc. note. during pre-scan write verify commands, write performance may decrease by 50% until pre-scan completes. write performance testing should be performed after pre-scan is complete. this may be checked by reading the bms status. to expedite the scan of the full pack and subsequently ex it from the pre-scan period, bms will begin scanning immediately when the drive goes to idle during the pre-scan period. in the event that the drive is in a high transaction traffic environment and is unable to comple te a bms scan within 24 power on hours bms will dis - able pre-scan to restore full performance to the system.
40 cheetah 15k.5 sas product manual, rev. c 7.6 deferred auto-reallocation deferred auto-reallocation (dar) simplifies reallocation al gorithms at the system level by allowing the drive to reallocate unreadable locations on a subsequent write command. sites are marked for dar during read oper - ations performed by the drive. when a write command is received for an lba marked for dar, the auto-reallo - cation process is invoked and attempts to rewrite the data to the original location. if a verification of this rewrite fails, the sector is re-mapped to a spare location. this is in contrast to the system having to use the reassign command to reassign a location that was unread - able and then generate a write command to rewrite the data. dar is most effective when awre and arre are enabled?this is the default setting from the seagate factory. with awre and arre disabled dar is unable to reallocate the failing location and will report an error sense code indicating that a write command is being attempted to a previously failing location. 7.7 idle read after write id l e re a d a f te r w r ite ( i ra w) u t ilize s id le tim e to ve r i fy th e i n te g r i t y o f r e ce n t ly wr itte n d a t a . du r i n g id le p e r io d s , no a c tive syst em r e q uest s , t he dr ive r e ads r e cen t ly wr i t ten dat a fr om t he m edia an d co m p ar e s it to valid wr ite com m an d d a t a r e si den t i n the dr i v es d a t a b u f f er . a n y se ctors tha t fa i l the com p ari s on re sul t i n the i n vo cati on of a rew r i t e and a u to- r eal l o ca ti on pr ocess. t he p r ocess attem p t s to r e w r i t e th e dat a to the ori g i n a l l o cati on. if a verification of this rewrite fails, the sector is re-mapped to a spare location.
cheetah 15k.5 sas product manual, rev. c 41 8.0 installation cheetah disc drive installation is a plug-and-play process. there are no jumpers, switches, or terminators on the drive. s a s dr ives ar e design ed to be used in a host system t hat pr o v ides a s a s - com p atible backplan e with bays de signed to acco mmo date t he dr ive. in such syste m s, th e hos t system t y pically pro v ides a carr i e r or tra y into which you n eed to mou n t the drive . mou n t th e drive to th e car r ier or tr ay pr ovided by th e host system using fo ur 6-32 unc screws. do not over-tighten or force the screws. you can mount the drive in any orientation. no t e . s a s dr ive s a r e design ed to be att a che d t o t he host system witho ut i/o or power cables. if you inte nd the use the drive in a n on-b a ckplane hos t syste m , connectin g th e d r ive using high- quality cables is acceptable as long as the i/o cable length does not exceed 4 meters (13.1 feet). slide the carrier or tray into the appropriate bay in yo ur host system using the instru ctions provided by the host system. this connects the drive directly to your system?s sas connector. the sas connector is normally located on a sas backpanel. see section 9.4.1 for additional information about these connectors. power is supplied through the sas connector. the drive is shipped from the factory low-level formatted in 5 12-byte logical blocks. you need to reformat the drive only if you want to select a different logical block size. figure 14. physical interface 8.1 drive orientation the drive may be mounted in any orientation. all drive performance characterizations, however, have been done with the drive in horizontal (discs level) and vertical (drive on its side) orientations, which are the two pre - ferred mounting orientations. j6 sas interface connector
42 cheetah 15k.5 sas product manual, rev. c 8.2 cooling cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the drive will not exceed temperature conditions specified in section 6.4.1, "temperature." the rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disc assembly (hda). you should confirm that adequate heat removal is provided using the temper - ature measurement guidelines described in section 6.4.1 . forced air flow may be required to keep temperatures at or below the temperatures specified in section 6.4.1 in which case the drive should be oriented, or air flow directed, so that the least amount of air flow resistance is created while providing air flow to the electronics and hda. also, the shortest possible path between the air inlet and exit should be chosen to minimize the travel l ength of air heated by the drive and other heat sources within the rack, cabinet, or drawer environment. if forced air is determined to be necessary, possible air-flow patterns are shown in figure 15. the air-flow pat - terns are created by one or more fans, either forcing or drawing air as shown in the illustrations. conduction, convection, or other forced air-flow patterns are acceptable as long as the temperature measurement guide - lines of section 6.4.1 are met. figure 15. air flow above unit under unit note. air flows in the direction shown (back to front) or in reverse direction (front to back) above unit under unit note. air flows in the direction shown or in reverse direction (side to side)
cheetah 15k.5 sas product manual, rev. c 43 8.3 drive mounting m ount the dr i v e usi n g the b o ttom or si de mo unti n g hol es. if you moun t the d r i v e u s i n g the botto m ho l e s, ensu r e that you do not physically distort the drive by attempting to mount it on a stiff, non-flat surface. the allowable mounting surface stiffness is 80 lb/in (14.0 n/mm). the following equation and paragraph define the allowable mounting surface stiffness: w h e r e k i s the m ounti n g sur f ace st i f f ness ( uni t s i n l b /i n or n / mm ) an d x i s th e out -of- pl ane surface di stor ti on ( unit s in inches or m illim et er s) . t he o u t- o f - p lan e dist o r tion ( x ) is de ter m ined by d e fining a p l ane with th r ee of th e four mo unti ng poi nt s fi xed and eval uati n g the out-o f-pl an e def l e cti on o f the f ourth mou n ti ng p o i n t w h e n a known force (f) is applied to the fourth point. 8.4 grounding signal ground (pcba) and hda ground are connected toget her in the drive and cannot be separated by the user. the equipment in which the drive is mounted is connected directly to the hda and pcba with no electri - cally isolating shock mounts. if it is desired for t he system chassis to not be connected to the hda/pcba ground, the systems integrator or user must provide a n onconductive (electrically isolating) method of mount - ing the drive in the host equipment. increased radiated emissions may result if you do no t provide the maximum surface area ground connection between system ground and drive ground. this is the system designer?s and integrator?s responsibility. k x x = f < 15lb = 67n
44 cheetah 15k.5 sas product manual, rev. c
cheetah 15k.5 sas product manual, rev. c 45 9.0 interface requirements this section partially describes the interface requirements as implemented on cheetah drives. additional infor - mation is provided in the sas interface manual (part number 100293071). 9.1 sas features this section lists the sas-specific features supported by cheetah drives. 9.1.1 task management functions table 6 lists the sas task management functions supported. 9.1.2 task management responses table 7 lists the sas response codes returned for task management functions supported. table 6: sas task management functions supported task name supported abort task yes clear aca yes clear task set yes abort task set yes logical unit reset yes query task yes table 7: task management response codes function name response code function complete 00 invalid frame 02 function not supported 04 function failed 05 function succeeded 08 invalid logical unit 09
46 cheetah 15k.5 sas product manual, rev. c 9.2 dual port support cheetah sas drives have two independent ports. these ports may be connected in the same or different scsi domains. each drive port has a unique sas address. the two ports run at the same link rate. the first port to successfully complete speed negotiation sets the link rate support by both ports. when the second port participates in speed negotiation, it indicates the only sup - ported speed is the speed selected by the first port. if the first port to complete speed negotiation looses sync before the second port completes speed negotiation, both ports revert back to the power on condition of allow - ing either link rate (1.5 or 3.0 gbits/sec). subject to buffer availability, the cheetah drives support: ? concurrent port transfers?the drive supports receiving command, task management transfers on both ports at the same time. ? full duplex?the drive supports sending xfer_rdy, data and response transfers while receiving frames on both ports.
cheetah 15k.5 sas product manual, rev. c 47 9.3 scsi commands supported table 8 lists the scsi commands supported by cheetah drives. table 8: commands supported by cheetah 15k.5 sas family drives command name command code supported change definition 40h n compare 39h n copy 18h n copy and verify 3ah n format unit [1] 04h y dpry bit supported n dcrt bit supported y stpf bit supported y ip bit supported y dsp bit supported y immed bit supported y vs (vendor specific) n inquiry 12h y date code page (c1h) y device behavior page (c3h) y firmware numbers page (c0h) y implemented operating def page (81h) y jumper settings page (c2h) y supported vital product data page (00h) y unit serial number page (80h) y lock-unlock cache 36h n log select 4ch y pcr bit y du bit n ds bit y tsd bit y etc bit n tmc bit n lp bit n log sense 4dh y application client log page (0fh) y buffer over-run/under-run page (01h) n cache statistics page (37h) y factory log page (3eh) y last n deferred errors or asynchronous events page (0bh) n last n error events page (07h) n
48 cheetah 15k.5 sas product manual, rev. c non-medium error page (06h) y pages supported list (00h) y read error counter page (03h) y read reverse error counter page (04h) n self-test results page (10h) y background medium scan page (15h) y start-stop cycle counter page (0eh) y temperature page (0dh) y verify error counter page (05h) y write error counter page (02h) y mode select (same pages as mode sense 1ah) 15h y [2] mode select (10) (same pages as mode sense 1ah) 55h y mode sense 1ah y [2] caching parameters page (08h) y control mode page (0ah) y disconnect/reconnect (02h) y error recovery page (01h) y format page (03h) y information exceptions control page (1ch) y b a ckgro und s c an mode subp age (01 h ) y notch and partition page (0ch) n protocol-specific port page (19h) y power condition page (1ah) y rigid disc drive geometry page (04h) y unit attention page (00h) y verify error recovery page (07h) y xor control page (10h) n mode sense (10) (same pages as mode sense 1ah) 5ah y prefetch 34h n read 08h y read buffer (modes 0, 2, 3, ah and bh supported) 3ch y read capacity 25h y read defect data (10) 37h y read defect data (12) b7h y read extended 28h y dpo bit supported y fua bit supported y read long 3eh y t a ble 8: c o m m and s su pp or ted by c h ee t a h 15 k . 5 s a s f a m i ly dr ive s (co n t i nu ed) command name command code supported
cheetah 15k.5 sas product manual, rev. c 49 reassign blocks 07h y receive diagnostic results 1ch y supported diagnostics pages (00h) y translate page (40h) y release 17h y release (10) 57h y request sense 03h y actual retry count bytes y extended sense y field pointer bytes y reserve 16h y 3rd party reserve y extent reservation n reserve (10) 56h y 3rd party reserve y extent reservation n rezero unit 01h y search data equal 31h n search data high 30h n search data low 32h n seek 0bh y seek extended 2bh y send diagnostics 1dh y supported diagnostics pages (00h) y translate page (40h) y set limits 33h n start unit/stop unit (spindle ceases rotating) 1bh y synchronize cache 35h y test unit ready 00h y verify 2fh y bytchk bit y write 0ah y write and verify 2eh y dpo bit y write buffer (modes 0, 2, supported) 3bh y firmware download option (modes 5, 7, ah and bh supported) [3] y write extended 2ah y dpo bit y t a ble 8: c o m m and s su pp or ted by c h ee t a h 15 k . 5 s a s f a m i ly dr ive s (co n t i nu ed) command name command code supported
50 cheetah 15k.5 sas product manual, rev. c [1] cheetah drives can format to 512, 520, 524, or 528 bytes per logical block. [2] warning. power loss during flash programming can result in firmware corruption. this usually makes the drive inoperable. [3] reference mode sense command 1ah for mode pages supported. [4] y = yes. command is supported. n = no. command is not supported. a = support is available on special request. fua bit y write long 3fh y write same 41h y pbdata n lbdata n xdread 52h n xdwrite 50h n xpwrite 51h n t a ble 8: c o m m and s su pp or ted by c h ee t a h 15 k . 5 s a s f a m i ly dr ive s (co n t i nu ed) command name command code supported
cheetah 15k.5 sas product manual, rev. c 51 9.3.1 inquiry data table 9 lists the inquiry command data that the drive should return to the initiator per the format given in the sas interface manual . t a ble 9: c h eet ah 15k .5 s a s inq u ir y d a t a * copyright year (changes with actual year). ** scsi revision support. refer to the appropiate spc release documentation for definitions. pp 10 = inquiry data for an inquiry command received on port a. 30 = inquiry data for an inquiry command received on port b. r# four ascii digits representing the last four digits of the product firmware release number. s# eight ascii digits representing the eight digits of the product serial number. [ ] bytes 18 through 26 reflect model of drive. the table above shows the hex values for model ST3300655SS. refer to the values below for the values of bytes 18 through 27 of you particular model: st 3300655ss 53 5 4 3 3 33 30 30 36 35 35 53 53 st 3146855ss 5 3 5 4 3 3 3 1 3 4 3 6 3 8 3 5 3 5 5 3 5 3 st 373455ss 5 3 5 4 3 3 3 7 3 3 3 4 3 5 3 5 5 3 5 3 2 0 9. 3.2 m od e s e nse dat a t he m ode s e nse co mman d provides a way for the drive to report its operating parameters to the initiator. the drive maintains four sets of mode parameters: 1. default values d e fa ul t val ues ar e hard - coded in the drive firmware stored in flash e-prom (nonvolatile memory) on the drive?s pcb. these default values can be changed only by downloading a complete set of new firmware into the flash e-prom. an initiator can request and receive from the drive a list of default values and use those in a mode select command to set up new current and saved values, where the values are change - able. 2. saved values s a ved val ues are store d on the d r i v e? s m edi a u s i n g a mode s e l e ct com m an d. onl y pa ram e ter val ues that ar e a l l o w ed to be chang ed c an b e cha nged by th i s me thod. p a ram e ters i n th e save d va l u es l i s t that are not cha ngea bl e by th e mo de s e l ect command get their values from default values storage. w hen po w e r i s applied to the drive, it takes saved values from the media and stores them as current val - ues in volatile memory. it is not possible to change the current values (or the saved values) with a mode bytes d a t a (h ex) 0-15 00 00 xx** 12 8b 00 10 0a 53 45 41 47 41 54 45 20 vendor id 16-31 [53 54 33 33 30 30 36 35 35 53 53] 1 20 20 20 20 20 product id 32-47 r# r# r# r# s# s# s# s# s# s# s# s# 00 00 00 00 48-63 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 64-79 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80-95 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 96-111 00 43 6f 70 79 72 69 67 68 74 20 28 63 29 20 32* *copyright 112-127 30* 30* 36* 20 53 65 61 67 61 74 65 20 41 6c 6c 20 notice 128-143 72 69 67 68 74 73 20 72 65 73 65 72 76 65 64 20
52 cheetah 15k.5 sas product manual, rev. c select command before the drive achieves operating speed and is ?ready.? an attempt to do so results in a ?check condition? status. on drives requiring unique saved values, the require d unique saved values are stored into the saved val - ues storage location on the media prior to shipping the drive. some drives may have unique firmware with unique default values also. on standard oem drives, the saved values are taken from the default values list and stored into the saved values storage location on the media prior to shipping. 3. current values c u r r en t val ues are vol a ti l e val ues bei ng used by the dri v e to contro l i t s oper ati o n . a mod e s e l e ct comm and can be used to chang e th e va l u es i d e n ti fi ed as ch ange abl e val ues. ori g i n a l l y , curr ent val ues are i n st al l e d from saved or default values after a power on reset, hard reset, or bus device reset message. 4. changeable values changeable values form a bit mask, stored in nonvolatile memory, that dictates which of the current values and saved values can be changed by a mode select command. a one (1) indicates the value can be changed. a zero (0) indicates the value is not changeable. for example, in table 9.3.2.1 , refer to mode page 81, in the row entitled ?chg.? these are hex numbers representing the changeable values for mode page 81. note in columns 5 and 6 (bytes 04 and 05), there is 00h which indicates that in bytes 04 and 05 none of the bits are changeable. note also that bytes 06, 07, 09, 10, and 11 are not changeable, because those fields are all zeros. in byte 02, hex value ff equates to the binary pattern 11111111. if there is a zero in any bit position in the field, it means that bit is not changeable. since all of the bits in byte 02 are ones, all of these bits are changeable. the changeable values list can only be changed by downloading new firmware into the flash e-prom. note. because there are often several different versions of drive control firmware in the total population of drives in the field, the mode sense values given in the following tables may not exactly match those of some drives. the following tables list the values of the data bytes returned by the drive in response to the mode sense com - mand pages for scsi implementation (see the sas interface manual ). definitions: def = default value. standard oem drives are shipped configured this way. chg = changeable bits; indicates if default value is changeable.
cheetah 15k.5 sas product manual, rev. c 53 9.3.2.1 ST3300655SS mode sense data m od e da ta he ad er : 03 f a 00 10 0 0 00 0 0 08 bl oc k de scr ip to r: 22 e c b2 5c 0 0 00 0 2 00 mo de p ag es: de f 8 1 0a c0 0 b ff 0 0 00 0 0 0 5 00 f f ff ch g 8 1 0a ff f f 00 0 0 00 0 0 f f 00 f f ff de f 8 2 0e 00 0 0 00 0 0 00 0 0 0 0 00 0 1 3a 0 0 00 00 0 0 ch g 8 2 0e 00 0 0 00 0 0 00 0 0 0 0 00 f f ff 0 0 00 00 0 0 de f 8 3 16 68 5 8 00 0 0 00 3 8 0 0 00 0 3 db 0 2 00 00 0 1 00 e 6 00 a a 40 00 0 0 00 ch g 8 3 16 00 0 0 00 0 0 ff f f 0 0 00 0 0 00 0 0 00 00 0 0 00 0 0 00 0 0 00 00 0 0 00 de f 8 4 16 01 2 2 64 0 8 00 0 0 0 0 00 0 0 00 0 0 00 00 0 0 00 0 0 00 0 0 3a a7 0 0 00 ch g 8 4 16 00 0 0 00 0 0 00 0 0 0 0 00 0 0 00 0 0 00 00 0 0 00 0 0 00 0 0 00 00 0 0 00 de f 8 7 0a 00 0 b ff 0 0 00 0 0 0 0 00 f f ff ch g 8 7 0a 0f f f 00 0 0 00 0 0 0 0 00 f f ff de f 8 8 12 14 0 0 ff f f 00 0 0 f f ff f f ff 8 0 20 00 0 0 00 0 0 00 0 0 ch g 8 8 12 a5 0 0 00 0 0 ff f f f f ff 0 0 00 2 0 00 00 0 0 00 0 0 00 0 0 de f 8 a 0a 02 0 0 00 0 0 00 0 0 0 0 00 0 f 0c ch g 8 a 0a 03 f 0 00 0 0 00 0 0 0 0 00 0 0 00 de f 1 8 06 16 0 0 00 0 0 00 0 0 ch g 1 8 06 00 0 0 00 0 0 00 0 0 de f 9 9 06 06 0 0 07 d 0 00 0 0 ch g 9 9 06 10 0 0 ff f f ff f f de f 9 a 0a 00 0 2 00 0 0 00 0 5 0 0 00 0 0 04 ch g 9 a 0a 00 0 3 ff f f ff f f 0 0 00 0 0 00 de f 9 c 0a 10 0 0 00 0 0 00 0 0 0 0 00 0 0 01 ch g 9 c 0a 9d 0 f ff f f ff f f f f ff f f ff de f b 9 0a 00 0 0 00 0 0 00 0 0 0 0 00 0 0 00 ch g b 9 0a 00 0 8 00 0 0 00 0 0 0 0 00 0 0 00 de f b a 0a 00 0 5 01 1 9 01 0 0 0 0 0a 0 0 00 ch g b a 0a 00 f f 03 f f ff f f 0 6 ff 0 0 00 de f 8 0 06 00 0 0 0f 0 0 00 0 0 ch g 8 0 06 b7 4 0 0f 0 0 00 0 0
54 cheetah 15k.5 sas product manual, rev. c 9.3.2.2 st3146855ss mode sense data m od e da ta he ad er : 03 f a 00 10 0 0 00 0 0 08 bl oc k de scr ip to r: 11 1 7 73 30 0 0 00 0 2 00 mo de p ag es: de f 8 1 0a c0 0 b ff 0 0 00 0 0 0 5 00 f f ff ch g 8 1 0a ff f f 00 0 0 00 0 0 f f 00 f f ff de f 8 2 0e 00 0 0 00 0 0 00 0 0 0 0 00 0 1 3a 0 0 00 00 0 0 ch g 8 2 0e 00 0 0 00 0 0 00 0 0 0 0 00 f f ff 0 0 00 00 0 0 de f 8 3 16 34 2 c 00 0 0 00 1 c 0 0 00 0 3 db 0 2 00 00 0 1 00 e 6 00 a a 40 00 0 0 00 ch g 8 3 16 00 0 0 00 0 0 ff f f 0 0 00 0 0 00 0 0 00 00 0 0 00 0 0 00 0 0 00 00 0 0 00 de f 8 4 16 01 2 2 64 0 4 00 0 0 0 0 00 0 0 00 0 0 00 00 0 0 00 0 0 00 0 0 3a a7 0 0 00 ch g 8 4 16 00 0 0 00 0 0 00 0 0 0 0 00 0 0 00 0 0 00 00 0 0 00 0 0 00 0 0 00 00 0 0 00 de f 8 7 0a 00 0 b ff 0 0 00 0 0 0 0 00 f f ff ch g 8 7 0a 0f f f 00 0 0 00 0 0 0 0 00 f f ff de f 8 8 12 14 0 0 ff f f 00 0 0 f f ff f f ff 8 0 20 00 0 0 00 0 0 00 0 0 ch g 8 8 12 a5 0 0 00 0 0 ff f f f f ff 0 0 00 2 0 00 00 0 0 00 0 0 00 0 0 de f 8 a 0a 02 0 0 00 0 0 00 0 0 0 0 00 0 5 57 ch g 8 a 0a 03 f 0 00 0 0 00 0 0 0 0 00 0 0 00 de f 1 8 06 16 0 0 00 0 0 00 0 0 ch g 1 8 06 00 0 0 00 0 0 00 0 0 de f 9 9 06 06 0 0 07 d 0 00 0 0 ch g 9 9 06 10 0 0 ff f f ff f f de f 9 a 0a 00 0 2 00 0 0 00 0 5 0 0 00 0 0 04 ch g 9 a 0a 00 0 3 ff f f ff f f 0 0 00 0 0 00 de f 9 c 0a 10 0 0 00 0 0 00 0 0 0 0 00 0 0 01 ch g 9 c 0a 9d 0 f ff f f ff f f f f ff f f ff de f b 9 0a 00 0 0 00 0 0 00 0 0 0 0 00 0 0 00 ch g b 9 0a 00 0 8 00 0 0 00 0 0 0 0 00 0 0 00 de f b a 0a 00 0 5 01 1 9 01 0 0 0 0 0a 0 0 00 ch g b a 0a 00 f f 03 f f ff f f 0 6 ff 0 0 00 de f 8 0 06 00 0 0 0f 0 0 00 0 0 ch g 8 0 06 b7 4 0 0f 0 0 00 0 0
cheetah 15k.5 sas product manual, rev. c 55 9.3.2.3 st373455ss mode sense data m od e da ta he ad er : 03 f a 00 10 0 0 00 0 0 08 bl oc k de scr ip to r: 08 8 b b9 98 0 0 00 0 2 00 mo de p ag es: de f 8 1 0a c0 0 b ff 0 0 00 0 0 0 5 00 f f ff ch g 8 1 0a ff f f 00 0 0 00 0 0 f f 00 f f ff de f 8 2 0e 00 0 0 00 0 0 00 0 0 0 0 00 0 1 3a 0 0 00 00 0 0 ch g 8 2 0e 00 0 0 00 0 0 00 0 0 0 0 00 f f ff 0 0 00 00 0 0 de f 8 3 16 1a 1 6 00 0 0 00 0 e 0 0 00 0 3 db 0 2 00 00 0 1 00 e 6 00 a a 40 00 0 0 00 ch g 8 3 16 00 0 0 00 0 0 ff f f 0 0 00 0 0 00 0 0 00 00 0 0 00 0 0 00 0 0 00 00 0 0 00 de f 8 4 16 01 2 2 64 0 2 00 0 0 0 0 00 0 0 00 0 0 00 00 0 0 00 0 0 00 0 0 3a a7 0 0 00 ch g 8 4 16 00 0 0 00 0 0 00 0 0 0 0 00 0 0 00 0 0 00 00 0 0 00 0 0 00 0 0 00 00 0 0 00 de f 8 7 0a 00 0 b ff 0 0 00 0 0 0 0 00 f f ff ch g 8 7 0a 0f f f 00 0 0 00 0 0 0 0 00 f f ff de f 8 8 12 14 0 0 ff f f 00 0 0 f f ff f f ff 8 0 20 00 0 0 00 0 0 00 0 0 ch g 8 8 12 a5 0 0 00 0 0 ff f f f f ff 0 0 00 2 0 00 00 0 0 00 0 0 00 0 0 de f 8 a 0a 02 0 0 00 0 0 00 0 0 0 0 00 0 2 d1 ch g 8 a 0a 03 f 0 00 0 0 00 0 0 0 0 00 0 0 00 de f 1 8 06 16 0 0 00 0 0 00 0 0 ch g 1 8 06 00 0 0 00 0 0 00 0 0 de f 9 9 06 06 0 0 07 d 0 00 0 0 ch g 9 9 06 10 0 0 ff f f ff f f de f 9 a 0a 00 0 2 00 0 0 00 0 5 0 0 00 0 0 04 ch g 9 a 0a 00 0 3 ff f f ff f f 0 0 00 0 0 00 de f 9 c 0a 10 0 0 00 0 0 00 0 0 0 0 00 0 0 01 ch g 9 c 0a 9d 0 f ff f f ff f f f f ff f f ff de f b 9 0a 00 0 0 00 0 0 00 0 0 0 0 00 0 0 00 ch g b 9 0a 00 0 8 00 0 0 00 0 0 0 0 00 0 0 00 de f b a 0a 00 0 5 01 1 9 01 0 0 0 0 0a 0 0 00 ch g b a 0a 00 f f 03 f f ff f f 0 6 ff 0 0 00 de f 8 0 06 00 0 0 0f 0 0 00 0 0 ch g 8 0 06 b7 4 0 0f 0 0 00 0 0
56 cheetah 15k.5 sas product manual, rev. c 9.4 miscellaneous operating features and conditions table 10 lists various features and conditions. a ?y? in the support column indicates the feature or condition is supported. an ?n? in the support column indicates the feature or condition is not supported. table 10: miscellaneous features supported feature or condition n automatic contingent allegiance n asynchronous event notification n synchronized (locked) spindle operation y segmented caching n zero latency read y queue tagging (up to 64 queue tags supported) y deferred error handling y parameter rounding (controlled by round bit in mode select page 0) y reporting actual retry count in extended sense bytes 15, 16, and 17 n adaptive caching y smp = 1 in mode select command needed to save rpl and rotational offset bytes table 11: miscellaneous status supported status y good y check condition y condition met/good y busy y intermediate/good y intermediate/condition met/good y reservation conflict y task set full n aca active n aca active, faulted initiator
cheetah 15k.5 sas product manual, rev. c 57 9.4.1 sas physical interface figure 16 shows the location of the sas device connecto r j1. figures 17 and 18 provide the dimensions of the sas device. details of the physical, electrical, and logical characteristics are provided within this section. the operational aspects of seagate?s sas drives are provided in the sas interface manual .. figure 16. physical interface sas i nterface connector
58 cheetah 15k.5 sas product manual, rev. c figure 17. sas connector dimensions c of datum b l 5.08 1.27 (6x) 1.27 (14x) 15.875 0.35min 15.875 33.43 0.05 b 4.90 0.08 0.84 0.05 (22x) 0.15 b p15 p1 s7 s1 see detail1 0.30 0.05 (4x) 4.00 0.08 0.15 d 0.30 0.05 (2x) 41.13 0.15 b b c c a a 0.20 b 42.73 ref. c of datum d l 1.10 r0.30 0.08 (4x) 2.00 (3x) 5.08 0.45 0.03 (7x) 0.10 m e 4.65 0.80 (6x) 7.62 5.92 0.52 0.08 x 45
cheetah 15k.5 sas product manual, rev. c 59 figure 18. sas connector dimensions 9.4.2 physical characteristics this section defines physical interface connector. 9.4.3 connector requirements contact your preferred connector manufacturer for mating part information. part numbers for sas connectors will be provided in a future revision of this publicati on when production parts are available from major connec - tor manufacturers. the sas device connector is illustrated in figures 17 and 18. 6.10 detail a 0.30 0.05 x 45 (5x) 0.40 0.05 x 45 (3x) coring allowed in this area. 2.25 0.05 4.85 0.05 0.10 b e s14 s8 4.40 0.15 see detail 2 3.90 0.15 section a - a section c - c a 0.35 0.05 45 r0.30 0.08 c 1.95 0.08 0.08 0.05 1.23 0.05 0.08 0.05 detail 2 contact surface flush to datum a 0.03 65 30 1.90 0.0 8 section b - b 2.40 0.08 0.10 a d
60 cheetah 15k.5 sas product manual, rev. c 9.4.4 electrical description sas drives use the device connector for: ? dc power ? sas interface ? activity led this connector is designed to either plug directly into a backpanel or accept cables. 9.4.5 pin descriptions this section provides a pin-out of the sas device and a description of the functions provided by the pins. t a bl e 12: s a s pi n des c ri pti o ns * - short pin to support hot plugging nc - no connection in the drive. pin signal name signal type pin signal name signal type s1 port a ground p1* nc (reserved 3.3volts) s2* +port a_in diff. input pair p2* nc (reserved 3.3volts) s3* -port a_in p3 nc (reserved 3.3volts) s4 port a ground p4 ground s5* -port a_out diff output pair p5 ground s6* +port a_out p6 ground s7 port a ground p7 5 volts charge s8 port b ground p8* 5 volts s9* +port b_in diff. input pair p9* 5 volts s10* -port b_in p10 ground s11 port a ground p11* ready led open collector out s12* -port b_out diff output pair p12 ground s13* +port b_out p13 12 volts charge s14 port b ground p14* 12 volts p15* 12 volts
cheetah 15k.5 sas product manual, rev. c 61 9.4.6 sas transmitters and receivers a typical sas differential copper transmitter and receiver pair is shown in figure 19. the receiver is ac cou - pling to eliminate ground shift noise . figure 19. sas transmitters and receivers 9.4.7 power the drive receives power (+5 volts and +12 volts) through the sas device connector. three +12 volt pins provide power to the drive, 2 short and 1 long. the current return for the +12 volt power supply is through the common ground pins. the supply current and return current must be distributed as evenly as possible among the pins. three +5 volt pins provide power to the drive, 2 short and 1 long. the current return for the +5 volt power sup - ply is through the common ground pins. the supply current and return current must be distributed as evenly as possible among the pins. current to the drive through the long power pins may be limited by the system to reduce inrush current to the drive during hot plugging. 9.5 signal characteristics this section describes the electrical signal characteristics of the drive?s input and output signals. see table 12 for signal type and signal name information. 9.5.1 ready led out the ready led out signal is driven by the drive as indicated in table 13. table 13: ready led out conditions normal command activity led status ready led meaning bit mode page 19h 0 1 spun down and no activity off off spun down and activity (command executing) on on spun up and no activity on off spun up and activity (command executing) off on spinning up or down blink s st eadily (50% on and 50% of f , 0. 5 s ec onds on and of f f or 0. 5 s ec onds ) format in progres s , each cy linder c h ange toggles on/off receiver differential transfer medium .0 1 .01 100 100 t r ans m i t t er rx ry tx ty
62 cheetah 15k.5 sas product manual, rev. c the ready led out signal is designed to pull down the cathode of an led. the anode is attached to the proper +3.3 volt supply through an appropriate current limiting resistor. the led and the current limiting resis - tor are external to the drive. see table 14 for t he ou tput ch aracte ri sti cs of the le d dr i v e si gnal s. 9.5.2 differential signals the drive sas differential signals comply with the intra-enclosure (internal connector) requirements of the sas standard. table 15 defines the general interface characteristics. 9.5.2.1 eye masks 9.5.2.1.1 eye masks overview the eye masks are graphical representations of the volt age and time limits on the signal at the compliance point. the time values between x1 and (1 - x1) cover all but 10 -12 of the jitter population. the random content of the total jitter population has a range of 7 standard deviations. table 14: led drive signal state test condition output voltage led off, high 0 v voh 3.6 v -100 a < i oh < 100 a led o n, l ow i ol = 15 ma 0 v ol 0.225 v t a ble 15: ge ner a l in ter f a ce ch ar acte r ist i cs c h ar acter i sti c u n i t s 1. 5 gb p s 3. 0 gb p s b i t ra te (n omi n a l ) m ba ud 1 , 500 3 , 000 u n i t i n terva l (u i)( nomi n al ) p s 6 66.6 3 33.3 im peda nce (n omi n a l , di f f er enti a l ) ohm 1 0 0 1 00 t r ansm i tter transi e nt s, maxi m u m v 1.2 1.2 r e ce i v er tr ansi ent s, m a xi mu m v 1.2 1.2
cheetah 15k.5 sas product manual, rev. c 63 9.5.2.1.2 receive eye mask figure 20 describes the receive eye mask. this eye mask applies to jitter after the application of a single pole high-pass frequency-weighting function that progressively attenuates jitter at 20 db/decade below a frequency of ((bit rate) / 1.667). figure 20. receive eye mask v e ri fyi n g comp l i a n ce w i t h the l i m i ts rep r esen ted b y the recei v e eye m a sk sh oul d b e don e w i t h rever s e cha nnel traffic present in order that the effects of crosstalk are taken into account. 9.5.2.1.3 jitter tolerance masks figure 21 describes the receive tolerance eye masks and is constructed using the x2 and z2 values given in table 18 . x1 op is half the value for total jitter in table 18 and x1 tol is half the value for total jitter in table 19 , for jitter frequencies above ((bit rate) / 1.667). figure 21. receive tolerance eye mask absolute amplitude (in v) z1 z2 0 v -z 1 -z 2 x 1x 2 1- x 2 1- x 1 normalized time (in ui) 01 ab s o l u t e a m p lit u d e (in v) z1 to l 0 v -z 1 op x1 op x2 1-x1 tol 1- x 1 op normalized tim e (in ui) (additional sinusoidal jitter) / 2 -z1 tol z1 op x1 tol o ut l i n e of ey e m as k af t er addi ng sinus oi dal j i t t er o utline of eye mask bef ore adding sinusoidal jitter 01 z2 -z2
64 cheetah 15k.5 sas product manual, rev. c the leading and trailing edge sl opes of figure 20 shall be preserved. as a result the amplitude value of z1 is less than that given in table 17 and z1 tol and z1 op shall be defined from those slopes by the following equa - tion: where: z1 tol is the value for z1 to be used for the tolerance masks; and z1 op , x1 op , and x2 op are the values in table 17 for z1, x1, and x2. the x1 points in the receive tolerance masks are greate r than the x1 points in the receive masks, due to the addition of sinusoidal jitter. figure 22 defines the sinusoidal jitter mask. figure 22. sinusoidal jitter mask z 1 to l z 1 op x x 2 op 05 , () x add it ion a l s i n u s o i dal j i t t e r () x 1 op ? x 2 op x 1 op ? ----------------------------------------------- ----------------------------------------------------------------- --------------- --- - = f nom / 25,000 f nom / 1,667 s i nu s o ida l j i t t e r f r e q u e nc y ( l o g /log plot ) p e a k -to - pe a k si n u so i d a l j i tte r (i n u i ) f no m = 1. 5 x 1 0 9 f or 1. 5 g b ps f no m = 3. 0 x 1 0 9 f or 3. 0 g b ps 1. 5 0 0. 1 f r e que nc y ( i n k h z ) 1. 0
cheetah 15k.5 sas product manual, rev. c 65 9.5.2.2 transmitter signal characteristics table 16 specifies the signal requirements at the transm itter end of a txrx connection as measured into the zero-length test load. all specifications are based on differential measurements. the oob sequence is performed at signal voltage levels corresponding to the lowest supported transfer rate. table 16 specifies the signal characteristics. table 16: transmitter signal characteristics signal characteristic a units 1.5 gbps 3.0 gbps skew b ps 20 15 tx off voltage c mv(p-p) < 50 < 50 maximum rise/fall time d ps 27 3 137 minimum rise/fall time d ps 67 67 maximum transmitter output imbalance e % 10 10 oob offset delta f mv 25 25 oob common mode delta g mv 50 50 a all tests in this table shall be performed with zero-length test load shown in figure 24 . b t he s k ew m eas urem ent s hal l be m ade at t he m i d poi nt of t he t r a ns i t i on w i t h a r epeat i ng 0101b p at t ern on t he phy s i c al l i n k . t he s a m e s t abl e t r i gger , c ohe rent t o t he dat a s t ream , s hal l be us ed f o r bot h t he t x + and t x - s i gnal s . sk ew i s defined as t he t i m e di f f erenc e bet w een t he m eans of t he m i d poi nt c r os s i ng t i m e s of t he t x + s i gnal and t he t x - s i gnal . c t he t r ans m i t t er of f v o l t age i s t he m a x i m u m a. c . v o l t age m eas ured at c o m p l i anc e poi nt s w hen t he t r ans m i t t er i s unpow ered or t ransmitting d.c. idle (e.g., during idle time of an oob signal). d r i se/fall times are measured from 20 % to 80 % of the transition with a repeating 0101b pattern on the physical link. e t he m ax i m um di f f erenc e bet w een t he v+ and v - a. c . r m s t r ans m i t t er am pl i t udes m eas ured on a c j t p a t t e s t p a t t ern (s ee 9. 5. 2. 3. 3) into the test load shown in figure 24 , as a percentage of the average of the v+ and v- a.c. rms amplitudes. f t he m a x i mum difference in the average differential voltage (d.c. offset) component between the burst times and the idle times of an oob signal. g t he m a x imum difference in the average of the common mode voltage between the burst times and the idle times of an oob signal.
66 cheetah 15k.5 sas product manual, rev. c 9.5.2.3 receiver signal characteristics table 17 defines the compliance point requirements of the signal at the receiver end of a txrx connection as measured into the test loads specified in figure 23 and figure 24 . 9.5.2.3.1 jitter table 18 defines the maximum allowable jitter . table 17: receiver signal characteristics signal characteristic units 1.5 gbps 3.0 gbps jitter (see figure 20) b n/a see table 18 see table 18 2 x z2 mv(p-p) 1,200 1,600 2 x z1 mv(p-p) 325 275 x1 a ui 0.275 0.275 x2 ui 0.50 0.50 skew d ps 80 75 max voltage (non-op) mv(p-p) 2.000 2.000 minimum oob align burst amplitude c mv(p-p) 240 240 maximum noise during oob idle time c mv(p-p) 120 120 max near-end crosstalk e mv(p-p) 100 100 a the value for x1 shall be half the value given for total jitter in table 18 . the test or analysis shall include the effects of a single pole high-pass frequency-weighting function that progressively attenuates jitter at 20 db/decade below a frequency of ((bit rate) / 1,667). b the value for x1 applies at a total jitter probability of 10 -12 . at this level of probability direct visual comparison between the mask and actual signals is not a valid method for determining compliance with the jitter output requirements. c with a measurement bandwidth of 1.5 times the baud rate (i.e. 4.5 ghz for 3.0 gbps). d t he s k ew m eas ur em ent s hal l be m ade at t he m i d poi nt of t he t r ans i t i on w i t h a repeat i ng 0101b pat t ern on t he phy s i c a l l i n k . t he s a m e s t abl e t r i gger , c o h e rent t o t he dat a s t ream , s hal l be us ed f o r bot h t he r x + and r x - s i gnal s . sk ew i s defi ned as t he t i m e di f f erenc e bet w een t he m eans of t he m i d poi nt c r os s i ng t i m e s of t he r x + s i gnal and t he r x - s i gnal . e n ear-end c r os s t al k i s t he unw ant ed s i gnal am pl i t ude at rec e i v er t e rm i nal s d r , c r , and xr c oupl ed f r om s i gnal s and noi se sources other than the desired signal. refer to sff-8410. t able 18: maximum allowable jitter 1. 5 gbps m, n 3.0 gbps m, n d eterministic jitter q total jitterc , d , e , f deterministic jittere total jitterc , d , e , f 0.35 0.55 0.35 0.55 a units are in ui. b the values for jitter in this section are measured at the average amplitude point. c total jitter is the sum of deterministic jitter and random jitter. if the actual deterministic jitter is less than the maximum specified, then the random jitter may increase as long as the total jitter does not exceed the specified maximum total jitter. d total jitter is specified at a probability of 10 -12 . e t he det erm i ni s t i c and t o t a l v a l ues i n t h i s t abl e appl y t o j i t t e r af t e r appl i c at i on of a s i ngl e pol e hi gh-p a s s f r equenc y - w eighting function that progressively attenuates jitter at 20 db/decade below a frequency of ((bit rate) / 1 667). f if total jitter received at any point is less than the maximum allowed, then the jitter distribution of the signals is allowed to be asymmetric. the total jitter plus the magnitude of the asymmetry shall not exceed the allowed maximum total jitter. the numerical difference between the average of the peaks with a ber < 10 -12 and the average of the individual events is the measure of the asymmetry. jitter peak-to-peak measured < (maximum total jitter - |asymmetry|).
cheetah 15k.5 sas product manual, rev. c 67 9.5.2.3.2 receiver jitter tolerance table 19 defines the amount of jitter the receiver shall tolerate . 9.5.2.3.3 compliant jitter test pattern (cjtpat) the cjtpat within a compliant protocol frame is used for all jitter testing unless otherwise specified. see the sas interface manual for definition of the required pattern on the physical link and information regarding spe - cial considerations for scrambling and running disparity. 9.5.2.3.4 impedance specifications table 20 defines impedance requirements. table 19: receiver jitter tolerance 1.5 gbps a 3.0 gbps a sinusoidal jitter b,c deterministic jitter e,f,h total jitter h sinusoidal jitter b,d deterministic jitter e,g,h total jitter h 0.10 0.35 0.65 0.10 0.35 0.65 a units are in ui. b the jitter values given are normative for a combination of deterministic jitter, random jitter, and sinusoidal jitter that receivers shall be able to tolerate without exceeding a ber of 10 -12 . receivers shall tolerate sinusoidal jitter of progressively greater amplitude at lower frequencies, according to the mask in figure 22 with the same deterministic jitter and random jitter levels as were used in the high frequency sweep. c sinusoidal swept frequency: 900 khz to > 5 mhz. d sinusoidal swept frequency: 1.800 khz to > 5 mhz. e no value is given for random jitter. for compliance with this standard, the actual random jitter amplitude shall be the value that brings total jitter to the stated value at a probability of 10 -12 . the additional 0.1 ui of sinusoidal jitter is added to ensure the receiver has sufficient operating margin in the presence of external interference. f deterministic jitter: 900 khz to 750 mhz. g deterministic jitter: 1.800 khz to 1.500 mhz. h t he det erm i n i s t i c and t o t a l v a l ues i n t h i s t abl e appl y t o j i t t e r af t e r appl i c at i on of a s i ngl e pol e hi gh-p a s s f r equenc y - weighting function that progressively attenuates jitter at 20 db/decade below a frequency of ((bit rate) / 1.667). table 20: impedance requirements (sheet 1 of 2) requirement units 1.5 gbps 3.0 gbps time domain reflectometer rise time 20 % to 80 % a,b ps 100 50 media (pcb or cable) differential impedance b,c,d ohm 100 10 100 10 differential impedance imbalance b,c,d,g ohm 5 5 common mode impedance b,c,d ohm 32.5 7.5 32.5 7.5 mated connectors differential impedance b,c,d ohm 100 15 100 15 differential impedance imbalance b,c,d,g ohm 5 5 common mode impedance b,c,d ohm 32.5 7.5 32.5 7.5 receiver termination differential impedance b,e,f ohm 100 15 100 15 differential impedance imbalance b,e,f,g ohm 5 5 receiver termination time constant b,e,f ps 150 max 100 max
68 cheetah 15k.5 sas product manual, rev. c 9.5.2.4 electrical txrx connections txrx connections may be divided into txrx connecti on segments. in a single txrx connection individual txrx connection segments may be formed from differing media and materials, including traces on printed wir - ing boards and optical fibers. this subclause applies onl y to txrx connection segments that are formed from electrically conductive media. each electrical txrx connection segment shall comply with the impedance requirements of table 20 for the media from which they are formed. an equalizer network, if present, shall be part of the txrx connection. txrx connections that are composed entirely of electr ically conducting media shall be applied only to homoge - nous ground applications (e.g., between devices within an enclosure or rack, or between enclosures intercon - nected by a common ground return or ground plane). 9.5.2.4.1 transmitter characteristics the drive are d.c. coupled. common mode impedance b,e ohm 20 min/40 max 20 min/40 max transmitter source termination differential impedance b ohm 60 min/115 max 60 min/115 max differential impedance imbalance b,g ohm 5 5 common mode impedance b ohm 15 min/40 max 15 min/40 max a all times indicated for time domain reflectometer measurements are recorded times. recorded times are twice the transit time of the time domain reflectometer signal. b all measurements are made through mated connector pairs. c the media impedance measurement identifies the impedance mismatches present in the media when terminated in its characteristic impedance. this measurement excludes mated connectors at both ends of the media, when present, but includes any intermediate connectors or splices. the mated connectors measurement applies only to the mated connector pair at each end, as applicable. d where the media has an electrical length of > 4 ns the procedure detailed in sff-8410, or an equivalent procedure, shall be used to determine the impedance. e the receiver termination impedance specification applies to all receivers in a txrx connection and covers all time points between the connector nearest the receiver, the receiver, and the transmission line terminator. this measurement shall be made from that connector. f at the time point corresponding to the connection of the receiver to the transmission line the input capacitance of the receiver and its connection to the transmission line may cause the measured impedance to fall below the minimum impedances specified in this table. the area of the impedance dip (amplitude as , the reflection coefficient, and duration in time) caused by this capacitance is the receiver termination time constant. the receiver time constant shall not be greater than the values shown in this table. an approximate value for the receiver termination time constant is given by the product of the amplitude of the dip (as ) and its width (in ps) measured at the half amplitude point. the amplitude is defined as being the difference in the reflection coefficient between the reflection coefficient at the nominal impedance and the reflection coefficient at the minimum impedance point. the value of the receiver excess input capacitance is given by the following equation: where (r0 || rr) is the parallel combination of the transmission line characteristic impedance and termination resistance at the receiver. g the difference in measured impedance to ground on the plus and minus terminals on the interconnect, transmitter or receiver, with a differential test signal applied to those terminals. t a ble 20: im pe dan ce r e q u ir em e n t s ( s h eet 2 of 2) requirement units 1.5 gbps 3.0 gbps c rec e i v er t e rm i nat i on t i m e c ons t ant r 0 rr | () - - - --- -- -- -- -- -- -- -- -- -- -- -- -- -- --- -- -- -- -- -- -- -- -- -- -- -- -- --- -- -- -- -- -- -- -- -- -- -- -- -- -- - - =
cheetah 15k.5 sas product manual, rev. c 69 a combination of a zero-length test load and the tran smitter compliance transfer function (tctf) test load methodology is used for the specificat ion of transmitter characteristics. this methodology specifies the trans - mitter signal at the test points on the required test loads. the transmitter uses the same settings (e.g., pre- emphasis, voltage swing) with both the zero-length test load and the tctf test load. the signal specifications at ir are met under each of these loading conditions. t he t c tf i s the ma thema t i c al st atem ent of the tra n sfer functi o n thr ough w h i c h th e tr ansmi tt er sh al l be cap abl e of pr oduci n g accep t a b l e si gn al s as defi n e d by a r e ce i v e mask. th e tr ansmi ssi on ma gni tud e re sponse of the tctf in db is given by the following equation for 1.5 gbps: fo r 50 mh z < f < 1.5 gh z, and : fo r 1.5 ghz < f < 5.0 ghz, wh e r e : a) f i s t he si gna l freq uency i n hert z . t he tr ansm i ssi o n mag n i t ude respo n se of the t c tf i n db i s gi ven by the fol l o w i ng e quati o n for 3.0 gb ps: fo r 50 mh z < f < 3.0 gh z, and : fo r 3.0 ghz < f < 5.0 ghz, where f is the signal frequency in hertz. the tctf is used to specify the requirements on transmitte rs that may or may not incorporate pre-emphasis or other forms of compensation. a compliance interconnect is any physical interconnect with loss equal to or greater than that of the tctf at the above frequencies that also meets the isi loss requirements shown in fig - ure 25 and figure 26 . compliance with the tctf test load requirement is veri fied by measuring the signal produced by the transmit - ter through a physical compliance interconnect attached to the transmitter. compliance with the zero-length test load requirement verified by measurement made across a load equiva - lent to the zero-length load shown in figure 24 . for both test load cases, the transmitter delivers the output voltages and timing listed in table 17 at the desig - nated compliance points. the default mask is ir for in tra-cabinet txrx connecti ons. the eye masks are shown in 9.5.2.1 . figure 23 shows the compliance interconnect test load. figure 23. compliance interconnect test load s 21 20 ?l o g 10 e () 65 , 10 6 ? f 05 , () 20 , 10 10 ? f () 33 , 10 20 ? f 2 () ++ () db = s 21 5 437 , ?d b = s 21 20 ?l o g 10 e () 65 , 10 6 ? f 05 , () 20 , 10 10 ? f () 33 , 10 20 ? f 2 () ++ () db = s 21 10 884 , ?d b = tx + tx- 1 0 n f 50 ohm 50 ohm p r obe po int s sas internal connector tc tf 10 nf
70 cheetah 15k.5 sas product manual, rev. c figure 24 shows the zero-length test load. figure 24. zero-length test load figure 25 shows an isi loss example at 3.0 gbps. figure 25. isi loss example at 3.0 gbps figure 26 shows an isi loss example at 1.5 gbps. figure 26. isi loss example at 1.5 gbps tx + tx- 10 n f 5 0 ohm 50 o hm p r obe po i n t s sas internal connector 10 n f is i l o s s > 3.9 db -1 0. 9 db frequency (ghz) s am p l e c om pl i a nc e i n t er c on nec t 0 3. 0 1. 5 0.3 s 21 (d b ) c o m p l i an c e i nt e r c o nn ec t m a gni t ude r e s po ns e a nd i s i l os s e x am pl e f o r 3. 0 g b ps isi l o s s > 2 . 0 db f r eq ue nc y ( g h z ) s a m p l e co m p l i a n c e i n te rc o n n e ct 0 1.5 0.75 0.15 s 21 (db) com p lia nc e in t e r c o n n e c t m a gn it ud e r e s p on s e an d i s i lo s s ex am pl e f o r 1. 5 g b p s - 5 .4 d b
cheetah 15k.5 sas product manual, rev. c 71 9.5.2.5 receiver characteristics the drive receiver is a.c. coupled. the receive netwo rk terminates the txrx connection by a 100 ohm equiva - lent impedance as specified in table 20 . the receiver operates within a ber of 10 -12 w hen a s a s si gnal w i t h val i d vol t age and t i m i ng char acter i s t i cs i s de l i ve red to the com p l i ance po i n t from a 100 oh m sour ce. th e rece i v e d s a s si gnal ar e consi der ed val i d i f i t meets the voltage and timing limits specified in table 17 . additionally the receiver operates within the ber objective when the signal at a receiving phy has the addi - tional sinusoidal jitter present that is specified in table 19 and the common mode signal v cm over frequency range f cm as specified in table 15 . the jitter tolerance is shown in figure 22 for all rx compliance points in a txrx connection. the figure given assumes that any external interference occurs prior to the point at which the test is applied. when testing the jitter tolerance capability of a receiver, the additional 0.1 ui of sinusoidal jitter may be reduced by an amount proportional to the act ual externally induced interference between the applica - tion point of the test and the input to the receiving phy. the additional jitter reduces the eye opening in both voltage and time.
72 cheetah 15k.5 sas product manual, rev. c
cheetah 15k.5 sas product manual, rev. c 73 10.0 seagate technology support services online services internet www.seagate.com for information about seagate products and services. worldwide support is available 24 hours daily by e-mail for your questions. presales support: www.sea g ate.com/support/email/email_presales.html or presales@seagate.com technical support : www.sea g ate.com/support/email/email_disc_support.html or discsupport@seagate.com myseagate my.sea g ate.com is the industry?s first web portal designed specifically for oems and distributors. it provides self-service access to critical applications, personalized content and the tools that allow our partners to man - age their seagate account functions. submit pricing requests, orders and returns through a single, password- protected web interface?anytime, anywhere in the world. spp.seagate.com spp. sea g ate.com supports seagate resellers with product information, program benefits and sales tools. you may register for customized communications that are not available on the web. these communications contain product launch, eol, pricing, promotions and other channe l-related information. to learn more about the ben - efits or to register, go to spp. sea g ate.com , any time, from anywhere in the world. seagate service centers presales support our presales support staff can help you determine whic h seagate products are best suited for your specific application or computer system, as well as product availability and compatibility. technical support seagate technical support is available to assist you online at support.sea g ate.com or through one of our call centers. have your system configuration info rmation and your ?st? model number available. seatdd ? (+1-405-324-3655) is a telecommunications device for the deaf (tdd). you can send questions or comments 24 hours daily and exchange messages with a technical support specialist during normal business hours for the call center in your region. customer service operations warranty service seagate offers worldwide customer support for seagate drives. seagate distributors, oems and other direct customers should contact their seagate customer service operations (cso) representative for warranty- related issues. resellers or end users of drive products should contact their place of purchase or one of the seagate cso warranty centers for assistance. have your drive?s ?st? model number and serial number avail - able.
74 cheetah 15k.5 sas product manual, rev. c data recovery services seagate offers data recovery services for all formats and all brands of storage media. our data recovery ser - vi ces l abs are cur r en tl y l o ca ted i n n o r t h a m eri c a. t o speak w i t h a case mana geme n t r epr esent ati v e , cal l 1-800-475-0143. additional information, including an online request form and data loss prevention resources, is available at www.datarecovery.sea g ate.com . authorized service centers in some locations outside the us, you can contact an authorized service center for service. usa/canada/latin america support services seagate service centers presales support c a ll cen ter t o ll-f r e e d i r ect dial fax a m e r i c as 1-877-271-3285 1 +1-405-324-4730 1 +1-405-324-4704 technical support c a ll cen ter t o ll-f r e e d i r ect dial fax a m e r i c as 1-800-seagate 2 +1-405-324-4700 2 +1-405-324-3339 customer service operations warranty service call cen ter t o ll-f r e e dir ect d i al fax / e-mail u s a , c anada , me xi co and 1-800-468-3472 3 ? +1-956-664-4725 latin america brazil ja bi l indust r i a l d o b r asi l ? + 55- 1 1 -4 191- 4761 +55-11-4191-5084 ltda 4 seagaterma.br@jabil.com data recovery services c a ll cen ter t o ll-f r e e d i r ect dial fax u s a , c anada , 1- 800- 475- 0143 5 + 1- 905- 474- 2162 1-800-475-0158 an d me xi co +1-905-474-2459 1 hours of operation are 8:00 a . m . to 7:00 p . m ., monday through friday (central time). 2 hours of operation are 8:00 a . m . to 8:00 p . m ., monday through friday (central time). 3 hours of operation are 8:00 a . m . to 5:00 p . m ., monday through friday (central time). 4 authorized service center 5 hours of operation are 8:00 a . m . to 8:00 p . m ., monday through friday, and 9:00 a . m . to 5:00 p . m ., saturday (eastern time).
cheetah 15k.5 sas product manual, rev. c 75 european support services for presales and technical support in europe, dial the seagate service center toll-free number for your spe - ci fi c l o cati o n . if your l o ca ti on i s not l i s ted he re, di al ou r pre s al es and tech ni cal suppo rt cal l cente r at + 1 -40 5 - 32 4-47 14 from 8: 00 a . m . to 1 1 :4 5 a . m . an d 1 : 00 p . m . to 5 : 00 p . m . (c entr a l e u r ope ti me) m onda y thr ough f r i day . the presales and technical support call center is located in oklahoma city, usa. for european warranty service, dial the toll-free number fo r your specific location. if your location is not listed here, dial our european cso warranty center at +31-20-316-7222 from 8:30 a . m . to 5:00 p . m . (central europe time) monday through friday. the cso warranty center is located in amsterdam, the netherlands. seagate service centers toll-free support numbers c a ll cen ter p r esa les an d t ech nica l s u pp or t warranty service a u str i a ? 00 800-47324289 b e l g i u m 00 80 0-47 3242 83 (0 0 800 -4s e a ga te ) 00 800-47324289 d e n m ar k 00 80 0-47 3242 83 00 800-47324289 f r anc e 00 80 0-47 3242 83 00 800-47324289 ge rma ny 00 80 0-47 3242 83 00 800-47324289 ir el and 00 80 0-47 3242 83 00 800-47324289 it al y 00 80 0-47 3242 83 00 800-47324289 n e th erl a n ds 00 80 0-47 3242 83 00 80 0-47 3242 89 n o r w ay 00 80 0-47 3242 83 00 80 0-47324289 p o l and 00 80 0-31 1 12 38 00 80 0-311 12 38 s p ai n 00 80 0-47 3242 83 00 80 0-47324289 s w eden 00 80 0-47 3242 83 00 80 0-47324289 s w i t zerl a n d 00 80 0-47 3242 83 00 80 0-47324289 t urkey 00 80 0-31 92 9 1 40 00 80 0-31 92 9 1 40 u n i t e d k i ngdom 00 80 0-47 3242 83 00 80 0-47 3242 89 f a x services?all europe (toll call) t e chnical support +1-405-324-3339 warranty service +31-20-653-3513
76 cheetah 15k.5 sas product manual, rev. c africa/middle east support services for presales and technical support in africa and the middle east, dial our presales and technical support call center at +1-405-324-4714 from 8:00 a . m . to 11:45 a . m . and 1:00 p . m . to 5:00 p . m . (central europe time) mon - day through friday. the presales and technical support call center is located in oklahoma city, usa. for warranty service in africa and the middle east, dial our european cso warranty center at +31-20-316- 7222 from 8:30 a . m . to 5:00 p . m . (central europe time) monday through friday, or send a fax to +31-20-653- 3513. the cso warranty center is located in amsterdam, the netherlands. asia/pacific support services for asia/pacific presales and technical support, dial the to ll-free number for your specific location. the asia/ pacific toll-free numbers are available from 6:00 a . m . to 10:45 a . m . and 12:00 p . m . to 6:00 p . m . (australian east - ern time) monday through friday, except as noted. if your location is not listed here, direct dial one of our tech - nical support locations. warranty service is available from 9:00 a . m . to 5:00 p . m ., monday through friday. warranty service for australia is available from 10:00 a . m . to 7:00 p . m ., april through october, and from 11:00 a . m . to 8:00 p . m . november through march (australian eastern time) monday through friday. seagate service centers c a ll cen ter t o ll-f r ee d i r e ct d i al fax a ustr al i a 1800-14 -720 1 ? ? c hina (mandarin) 1, 4 800 -810 -966 8 + 86-10-6225-5336 ? h o n g k ong 800 -90- 0474 ? ? h o ng kong (cantonese) 1, 4 001 -800 -0830-1730 ? ? in dia 2, 4 1-80 0-180- 1104 ? ? in donesi a 001 -803 -1-003-2165 ? ? j a pan 3, 4 003 4 800 400 554 ? ? ko r e a 3, 4 007 98 85 21 7635 ? ? m a l a ysi a 1 - 800-80-2335 ? ? n e w z eal an d 080 0-44 3988 ? ? s i ngap ore 800 -1 101 -150 ? + 65-6 488- 7525 t a iwan (mandarin) 1, 4 00- 800- 0830-1730 ? ? t hai l and 001 -800 -11-0032165 ? ? cu st omer service operations w a rranty service c a ll cen ter t o ll-f r ee d i rect dial fax a s i a/p aci f i c ? + 65-6 485- 3595 + 65-6 485- 4860 a ustr a l i a 180 0-12 -927 7 ? ? india 4 ? + 91-4 4 - 4 2 01500 0 + 91-4 4 - 42015184 1 h ours of operation are 8:30 a . m . to 5:30 p . m ., monday through friday (australian western time). 2 hours of operation are 9:00 a . m . to 6:00 p . m ., monday through saturday. 3 h ours of operation are 9:30 a . m . to 6:30 p . m ., monday through friday. 4 authorized service center
cheetah 15k.5 sas product manual, rev. c 77 index numerics 12 volt pins 61 5 volt pins 61 a abort task set function 45 ac coupling 61 ac power requirements 23 aca active status 56 aca active, faulted initiator status 56 acoustics 36 active led out signal 61 actuator assembly design 7 adaptive caching 56 afr 9 air cleanliness 35 air flow 42 illustrated 42 air inlet 42 altitude 33 ambient 32 ambient temperature 42 ansi documents scsi 5 serial attached scsi 5 asynchronous event notification 56 audible noise 3 auto write and read reallocation programmable 8 automatic contingent allegiance 56 average idle current 23 , 24 average rotational latency 11 b background media scan 39 backpanel 60 bms 39 buffer data 8 space 13 busy status 56 c cache operation 13 cache segments 13 caching write data 14 canadian department of communications 3 capacity unformatted 11 check condition status 56 chemical pollutants 35 class b limit 3 clear aca function 45 clear task set function 45 commands supported 47 condensation 33 condition met/good status 56 connector illustrated 59 requirements 59 continuous vibration 35 cooling 42 corrosive environment 35 crc error 16 current profiles 25 customer service 21 d dar 40 data block size modifing the 9 data heads read/write 11 data rate internal 11 data transfer rate 12 dc power 60 requirements 23 defect and error management 37 defects 37 deferred auto-reallocation 40 deferred error handling 56 description 7 dimensions 36 disc rotation speed 11 drive 35 drive characteristics 11 drive failure 16 drive malfunction 16 drive mounting 36 , 43 drive select 60 dual port support 46 e electrical description of connector 60 signal characteristics 61 specifications 23 electromagnetic compatibility 3 electromagnetic susceptibility 36 emi requirements 3
78 cheetah 15k.5 sas product manual, rev. c en vi ronm ent 42 environmental limits 32 requirements 15 environmental control 35 error management 37 rates 15 errors 37 f fcc rules and regulations 3 features 8 interface 45 firmware 8 corruption 50 flawed sector reallocation 8 format command execution time 12 function complete, code 00 45 not supported, code 05 45 reject, code 04 45 g good status 56 gradient 32 , 33 ground shift noise 61 grounding 43 h hda 42 , 43 head and disc assembly (hda) 7 head and disc assembly. see hda heads read/write data 11 heat removal 42 heat source 42 host equipment 43 hot plugging the drive 17 humidity 33 humidity limits 32 i idle read after write 40 inquiry data 51 installation 41 guide 5 interface commands supported 47 error rate 15 errors 16 illustrated 57 physical 57 requirements 45 intermediate/condition met/good status 56 intermediate/good status 56 internal data rate 11 internal defects/errors 37 internal drive characteristics 11 iraw 40 j jumpers 41 l latency average rotational 11 , 12 logical block address 13 logical block reallocation scheme 8 logical block size 8 , 12 logical segments 13 m maintenance 15 maximum delayed motor start 23 , 24 maximum start current 23 , 24 media description 8 media pre-scan 39 miscellaneous feature support adaptive caching 56 asynchronous event notification 56 automatic contingent allegiance 56 deferred error handling 56 parameter rounding 56 queue tagging 56 reporting actual retry count 56 segmented caching 56 smp = 1 in mode select command 56 synchronized (locked) spindle operation 56 zero latency read 56 miscellaneous status support aca active 56 aca active, faulted initiator 56 busy 56 check condition 56 condition met/good 56 good 56 intermediate/condition met/good 56 intermediate/good 56 reservation conflict 56 task set full 56 miscorrected media data 15 mode sense data, table 51 , 53 mounting 43 holes 43 orientations 41
cheetah 15k.5 sas product manual, rev. c 79 n noise audible 3 noise immunity 25 non-operating 33 , 35 temperature 32 non-operating vibration 35 o office environment 35 operating 33 , 35 operating environment 16 option selection 60 out-of-plane distortion 43 p package size 34 package test specification 5 packaged 34 parameter rounding 56 pcba 43 peak bits per inch 11 peak operating current 23 , 24 peak-to-peak measurements 25 performance characteristics detailed 11 general 12 performance degradation 33 performance highlights 8 physical damage 35 physical dimensions 36 physical interface 57 physical specifications 23 pin descriptions 60 power 61 dissipation 29 requirements, ac 23 requirements, dc 23 sequencing 25 power distribution 3 power-on operating hours 16 power-up hours 16 prefetch/multi-segmented cache control 13 preventive maintenance 15 q queue tagging 56 r radio interference regulations 3 rcd bit 13 read error rates 15 , 37 read/write data heads 11 receivers 61 recommended mounting 34 recoverable errors 15 recovered media data 15 reference documents 5 relative humidity 33 reliability 9 specifications 15 reliability and service 16 repair and return information 21 reporting actual retry count 56 reservation conflict status 56 resonance 33 return information 21 rotation speed 11 s safety 3 sas interface 60 physical interface 57 task management functions 45 sas documents 5 sas interface manual 3 , 5 scsi interface commands supported 47 seek error defined 16 rate 15 seek performance characteristics 11 seek time average typical 11 full stroke typical 11 single track typical 11 segmented caching 56 self-monitoring analysis and reporting technology 9 , 17 serial attached scsi (sas) interface manual 1 shielding 3 shipping 21 shipping container 32 shock 33 and vibration 33 shock mount 43 signal characteristics 61 single-unit shipping pack kit 10 smart 9 , 17 smp = 1 in mode select command 56 spindle brake 8 standards 3 start/stop time 12 sulfur 35 support services 73
80 cheetah 15k.5 sas product manual, rev. c surface stiffness allowable for non-flat surface 43 switches 41 synchronized spindle operation 56 system chassis 43 t task management functions 45 abort task set 45 clear aca 45 clear task set 45 terminate task 45 task management response codes 45 function complete 00 45 function not supported 05 45 function reject 04 45 task set full status 56 technical support services 73 temperature 32 , 42 limits 32 non-operating 32 regulation 3 see also cooling terminate task function 45 terminators 41 tracks per inch 11 tracks per surface 11 transmitters 61 transporting the drive 21 u unformatted 9 unrecoverable errors 15 unrecovered media data 15 v vibration 33 , 35 w warranty 21 z zero latency read 56 zone bit recording (zbr) 8

seagate technology llc 920 disc drive, scotts valley, california 95066-4544, usa publication number: 100384784, rev. c, printed in usa

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