Manuale d’uso / di manutenzione del prodotto ST3400755SS del fabbricante Seagate
Vai alla pagina of 80
Prod uct Ma nu al Ch eet ah ® NS SAS 10045 3994 Rev . B Aug ust 2007 ST34 00 755S S.
Copyri ght © 200 7 Seagat e T echnology LL C. All r ight s reserved . Printed in U.S. A. Pub lication nu mber: 100 45399 4, Rev . B, August 2007 Sea gate, Sea gate T echnolog y and the W ave logo are registe red trade marks of S eagate T echno logy LL C in the United S tates an d/or other count ries.
Cheetah N S SAS Prod uct Manual , Rev. B i Cont ent s 1.0 S cope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 S tandards, co mpliance an d refere nce document s .
ii Cheet ah NS SAS P roduct Man ual, Rev. B 6.4.2 Relat ive hum idity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 6.4.3 E ffective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . .
Cheetah N S SAS Prod uct Manual , Rev. B 1 List o f Fi gures Figure 1. Typical ST3400755SS drive +5V and +12V current profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 2. ST3400755SS (3 Gbit) DC c urrent and power vs.
2 Cheet ah NS SAS P roduct Man ual, Rev. B.
Cheetah N S SAS Prod uct Manual , Rev. B 1 1.0 S cope This ma nual de scribes Sea gate T echnolog y ® LL C, Cheet ah ® NS S AS (Seri al Atta ched SCS I) disk drives. Cheet ah drives support the SAS Protocol speci ficatio ns to the extent describe d in this manua l.
2 Cheet ah NS SAS P roduct Man ual, Rev. B.
Cheetah N S SAS Prod uct Manual , Rev. B 3 2.0 S t andards, compliance and ref erence docu ment s The dr ive has been d evelope d as a system p eriphe ral to the hig hest st and ards of desig n and constru ction.
4 Cheet ah NS SAS P roduct Man ual, Rev. B 2.2 C omp liance 2.2.1 Elect roma gn etic com plia nce Seag ate uses an i ndepend ent lab oratory to confirm comp liance w ith the di rectives/st and ards for C E Ma rking and C-T ick Marking. The drive was tested in a r epresent ative system for typical a pplications.
Cheetah N S SAS Prod uct Manual , Rev. B 5 2.3 Ref eren ce doc ume nt s SAS In stall ation Gui de Seag ate par t number: 1004 53998 SCSI Commands R eferen ce Ma nual Seag ate par t number: 1002 93068 SAS In terface Ma nual Seag ate par t number: 1002 93071 Applica ble ANSI SAS docu ments SFF-83 23 3.
6 Cheet ah NS SAS P roduct Man ual, Rev. B.
Cheetah N S SAS Prod uct Manual , Rev. B 7 3.0 General d escription Cheet ah dr ives combi n e T unneling Ma gneto resistive (T M R) head s and a S er ial Att ach ed S CSI (SAS ) inter face to pro vid.
8 Cheet ah NS SAS P roduct Man ual, Rev. B 3. 1 St and ar d fea t u re s Cheet ah NS SAS drive s have the fo llowin g standa rd feature s: • Perp endicular recording techno logy • 1.
Cheetah N S SAS Prod uct Manual , Rev. B 9 3.5 Fo rma tte d ca paciti es S tandard OEM models are for matted to 512 byte s per block. Th e block size is select able at forma t time and must be a mul tiple of 4 bytes.
10 Cheet ah NS SAS P roduct Man ual, Rev. B.
Cheetah N S SAS Prod uct Manual , Rev. B 11 4.0 Performance cha racteristics This secti on pr ovides det ailed i nforma tion co ncerning pe rformance -re lated charact eristics a nd fe atures of Che etah NS SAS dr ives. 4.1 Int e rn al driv e char act eris tic s ST3400755SS Drive capacity 400.
12 Cheet ah NS SAS P roduct Man ual, Rev. B 4.2.2 For mat co mmand execut ion tim e (min utes) Executio n time measured from rece ipt of t he last byte of the Com mand Descri ptor Bl ock (CDB) to the req uest for a S tat us Byte T ransfer to th e Initiat or (excludi ng connect /disconne ct).
Cheetah N S SAS Prod uct Manual , Rev. B 13 4.4 P r ef etc h /m ult i- s eg m en te d ca ch e co nt ro l The d rive provides a pref etch (rea d look- ahead) and mul t i-segme nted cache contr ol algo rithms that in m any cases ca n enhan ce syst em per formance.
14 Cheet ah NS SAS P roduct Man ual, Rev. B If rea d caching is en abled (RCD=0), then dat a written to th e medium is retained in the cach e to be m ade avail- able for future re ad cach e hits . The sam e buffe r sp ace and se gmenta tion is use d as set up for re ad func tions.
Cheetah N S SAS Prod uct Manual , Rev. B 15 5.0 Reliabi lity specifi cations The follow ing reliab ility specificat ions assume correct hos t and driv e ope ration al int erface, inclu ding all inter - face timi ngs, power supply volt ages, environ mental requir ements and dri ve mounting constraint s.
16 Cheet ah NS SAS P roduct Man ual, Rev. B 5.1.3 Seek errors A seek err or is defined as a failure of the dri ve to pos ition the heads to the addresse d track. Aft er dete cting an initia l seek error , the driv e automati call y perf orms an error recovery process.
Cheetah N S SAS Prod uct Manual , Rev. B 17 5.2.4 S .M.A. R.T . S.M.A.R .T . is an acronym for Se lf-Mon itoring Analysis and Repor ting T echnol ogy .
18 Cheet ah NS SAS P roduct Man ual, Rev. B Err or rate is the number of errors per oper ation. The algo rith m tha t S .M.A .R.T . uses to re cord rate s of err or i s to set thre sholds f or th e number of erro rs an d their inter v al.
Cheetah N S SAS Prod uct Manual , Rev. B 19 The mo st thorough o ption is the extended test th at perform s variou s tests on the drive an d scans every logical blo ck address (L BA) of the drive .
20 Cheet ah NS SAS P roduct Man ual, Rev. B Each test consist s of three segments: an electr ical test segmen t, a servo test segment, and a read/ verify scan segment . Sho rt tes t (Fun cti on C ode: 00 1b) The p urpose of the short test is to p rovide a tim e-limite d test that test s as much of the drive a s possib le within 120 seconds.
Cheetah N S SAS Prod uct Manual , Rev. B 21 procedu re. Seagate will pay for tr ansporting the rep air or replacement item to the custome r . For more det ailed warran ty in formati on, re fer to the stan dard terms an d c ondition s of purcha se for S eaga te prod uct s on your pur- chase docu ment ation.
22 Cheet ah NS SAS P roduct Man ual, Rev. B.
Cheetah N S SAS Prod uct Manual , Rev. B 23 6.0 Physi cal/electrical spe cifications This secti on pro vides infor mation re lating to the physical and electrica l chara cteristics o f the driv e. 6.1 AC po wer re qu ir em ent s None. 6.2 DC po wer re qu ir em ent s The volta ge and current r equir ements for a s ingle d rive a re show n below .
24 Cheet ah NS SAS P roduct Man ual, Rev. B [5] See p aragr aph 6.2.1, "Con ducted noise immuni ty ." S pecified volt age to lerance includes r ipple, noise , and transient resp onse. [6] Duri ng idle, the dri ve heads are relocat ed every 60 second s to a random loca tion withi n the band fr om three- quar ters to maximum track.
Cheetah N S SAS Prod uct Manual , Rev. B 25 Figure 19. T ypical ST3400755SS d rive +5V and +12V current p rofiles 6. 3 Power di ss ipat io n T ypical power dissip ation under idle co nditions in 3Gb o peration i s 8.19 watt s (2 7.95 BTU s per hour ).
26 Cheet ah NS SAS P roduct Man ual, Rev. B 6.4 Enviro nme nt al limits T emper ature and hum idity values exp erienced by the dr iv e must be such t hat condensation does not occur on any dr ive p art. A ltitude a nd atmosp heric p ressure sp ecificati ons are reference d to a stand ard day at 58.
Cheetah N S SAS Prod uct Manual , Rev. B 27 6.4.2 Rela tive hu midity The valu es below assume that n o cond ensation on th e drive occurs. a. Operati ng 5% to 95% non- condensing r elative hu midity wi th a max imum g radient of 2 0% per h our . b. Non -operating 5% to 95% non- condensing r elative hu midity .
28 Cheet ah NS SAS P roduct Man ual, Rev. B d. Packag ed Disk drives shipped as loose load ( not palletized) general freight will be p ackag ed to withst and dr ops fr om hei ghts as de fined in t he tabl e below . Fo r addit ional de tails refer to Seaga te specifica tions 30 190-001 (under 100 l bs/45 kg) or 30191-00 1 (o ver 100 lbs/45 Kg).
Cheetah N S SAS Prod uct Manual , Rev. B 29 6.4.4.2 V ibration a. Operati ng—nor mal The dr ive as inst alled for normal oper ation, shall co mply wit h the comp lete specifie d perf ormance w hile subjected t o contin uous vibrati on not exce eding 5 - 500 Hz @ 0.
30 Cheet ah NS SAS P roduct Man ual, Rev. B exposed to a n am bient relat ive hum i dity gr eate r th an 9 5%. Mat erials used in cabin et fa bri cation , such as v ul ca- nized rubb er , that can outgas corr osive comp ounds should be mi nimize d or elimina ted.
Cheetah N S SAS Prod uct Manual , Rev. B 31 6. 5 Mecha ni ca l s pe ci fic at ion s Refe r to Figur e 23 for d et ailed ph ysical dimensions . See Sectio n 8.3, “Dri ve moun ting.” Figure 23. Physical d imensions Height : 1.028 i n 26.1 1 mm Wid th: 4.
32 Cheet ah NS SAS P roduct Man ual, Rev. B.
Cheetah N S SAS Prod uct Manual , Rev. B 33 7.0 Defect and error management Seag ate continues to use innovative techno logies to ma nage defect s and erro rs. These tech nologie s are designed to incre ase data integr ity , per form drive se lf-m aintenance, an d validat e pro per dri ve opera tion.
34 Cheet ah NS SAS P roduct Man ual, Rev. B The drive firmware error recove ry algor ithms consist s of 1 1 level s for read reco veries and five levels for writ e. Each level may consist of m ultiple steps, where a step is defined as a re covery function involving a sin gle re- read or re- write a ttempt.
Cheetah N S SAS Prod uct Manual , Rev. B 35 7. 3 SAS s ys tem err or s Inform ation on the reporting of operati onal error s or fau lts across the i nterface is gi ven in the SAS Interface Manual . The SSP Respon se returns inform ation to the host a bout nume rous kinds of e rro rs or fault s.
36 Cheet ah NS SAS P roduct Man ual, Rev. B 7.6 De ferr ed A uto-R eal l ocat ion Deferred Aut o-Realloc ation (DAR) simplifies reallocation al g orithms at the system leve l by allowing the drive to reall ocate un readabl e location s on a subse quent write com mand.
Cheetah N S SAS Prod uct Manual , Rev. B 37 8.0 Inst allation Cheet ah d isk drive inst allatio n is a plu g-and-play process. Ther e are no ju mpers, switche s, or termina tors on the dri ve. SAS drives are designed to be used in a host system t hat pro vides a SAS-comp atible backplan e with bays designed to acco mmodate t he drive.
38 Cheet ah NS SAS P roduct Man ual, Rev. B 8.2 Coolin g The host enclosure must di ssipate heat from the dr ive. Y ou should confirm that the host en closure is desig ned to ensur e that the dr iv e ope rate s withi n the tempe ratu re measur emen t gui de lines descr ibed i n Sectio n 6.
Cheetah N S SAS Prod uct Manual , Rev. B 39 8. 3 Driv e m oun ti ng Mount the dr iv e using the b ottom or side mo unti ng holes. If you moun t the d ri ve u sing the botto m ho le s, ensu re that you do no t physically disto rt the dr ive by att empting to m ount it on a stif f, non-fl at surface.
40 Cheet ah NS SAS P roduct Man ual, Rev. B.
Cheetah N S SAS Prod uct Manual , Rev. B 41 9.0 Interface requ irement s This sect ion p artial ly de scribes the inter face requir ement s as implemented on Cheetah drive s. Additi onal i nfor- mation is p rovided in the SAS Inter face Manu al (par t number 100293071) .
42 Cheet ah NS SAS P roduct Man ual, Rev. B 9.2 Dual po rt supp or t Cheet ah SAS drive s have tw o ind epen dent po rt s. Th ese por t s may be co nnecte d in the sa me or dif fere nt S CSI domains. Eac h drive port has a unique SAS address. The two port s run at the same l ink rate.
Cheetah N S SAS Prod uct Manual , Rev. B 43 9. 3 SCSI com m and s su ppor te d T able 6 li sts the SCSI com mands supp orted by Chee ta h drives. T a ble 6: Co mmand s su ppor ted by Cheet ah N S SAS .
44 Cheet ah NS SAS P roduct Man ual, Rev. B Non-me dium Err or pa ge (0 6h) Y Pages Suppor ted list ( 00h) Y Read Erro r Coun ter p age (0 3h) Y Re ad Reverse E rror Cou nter p age ( 04h) N Self-test .
Cheetah N S SAS Prod uct Manual , Rev. B 45 Reassign B locks 07h Y Recei ve Diagnosti c Result s 1Ch Y Supported Diagnost ics p ages (00h) Y T ranslate p age (40h ) Y Release 17h Y Relea se (1 0) 57h .
46 Cheet ah NS SAS P roduct Man ual, Rev. B [1] Cheet ah NS drives can format to 512, 520 , 524 , or 528 byte s per logi cal block. [2] Wa r n i n g . P ower lo ss duri ng flas h progr amming can re sult in firmware co rru ption. Thi s usual ly makes the driv e inoperab le.
Cheetah N S SAS Prod uct Manual , Rev. B 47 9.3.1 Inqu iry dat a T able 7 l ists the Inquiry com mand dat a th at the dri ve should re turn t o the initia tor pe r the form at given in the SAS In terface Ma nual . T able 7: Cheet ah NS SAS inquiry d at a * Copyright year (changes w ith actual year).
48 Cheet ah NS SAS P roduct Man ual, Rev. B On standa rd OEM drives, the saved values are taken from the default values list and store d into the saved values stor age loc ation on the media p rior to shi pping. 3. Curren t values Curren t values are volatile values bei ng used by the drive to contro l it s oper ation .
Cheetah N S SAS Prod uct Manual , Rev. B 49 9.3.2.1 ST3 400755S S Mode Sens e dat a MOD E PA GES: DEF 80 06 00 80 0f 00 00 00 CHG 80 06 b7 c0 0f 00 00 00 DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff CHG 81.
50 Cheet ah NS SAS P roduct Man ual, Rev. B 9. 4 Misc ell ane ou s oper ati ng fe atur es a nd c on dit io ns T able 8 list s various fea ture s and co nditions. A “ Y” in the su pport co lumn indicate s the f eature o r condi tion is support ed. An “ N” in the suppo rt co lumn indi cates the feat ure or con dition is no t supp orted.
Cheetah N S SAS Prod uct Manual , Rev. B 51 9.4.1 SAS ph ysica l interface Figure 26 shows the lo cation of th e SAS devi ce conn ecto r J1. Figur es 27 an d 28 pr ovide the d im ension s of the SAS device. Det ails of the ph ysical, electrical, an d logical chara cteristics are provide d within this secti on.
52 Cheet ah NS SAS P roduct Man ual, Rev. B Figu re 2 7 . SAS c on ne c t or dime n sio ns 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.
Cheetah N S SAS Prod uct Manual , Rev. B 53 Figu re 2 8 . SAS c on ne c t or dime n sio ns 9.4.2 Phy sical char act eristic s This section define s physical int erface conne ctor . 9.4.3 Conn ector req uirement s Cont act your preferr ed con nector man ufacturer for mating p a rt informa tion.
54 Cheet ah NS SAS P roduct Man ual, Rev. B 9.4.4 Elect rical d escript ion SAS d rives use the d evice con nector for: • DC power • SAS inte rface • Activity LED This conn ector i s designed to e ither plug dir ectly into a backpan el or accept cables.
Cheetah N S SAS Prod uct Manual , Rev. B 55 9.4.6 SAS transm itter s and r eceivers A typ ical SAS dif fere ntial copper tra nsmitter a nd r eceiver p air is show n in Fi gure 29. The re ceiver is AC co u- pling to elimi nate groun d shif t noise. Figure 29.
56 Cheet ah NS SAS P roduct Man ual, Rev. B The Re ady LED Ou t signa l is desig ned t o pull down the cat hode of an LED . The an ode i s attache d to the proper +3.3 volt supp ly thr ough an app ropriate current limiting resisto r . The LE D an d the cu rrent l imitin g resis- tor ar e external to the d rive.
Cheetah N S SAS Prod uct Manual , Rev. B 57 9.5.2.1. 2 Rec eive eye m ask Figure 30 de scribes the re ceive eye m ask. This eye m ask appl ies to jitter after the appli cation of a si ngle pol e high-p ass fre quency-weighti ng function tha t progressivel y attenuates ji tter at 20 dB/deca de below a frequency of ((b it rate ) / 1 .
58 Cheet ah NS SAS P roduct Man ual, Rev. B The leading and trailing e dge sl opes of figure 30 sha ll be pre served. A s a re sult the a mplitude valu e of Z 1 is less than that given in table 15 and.
Cheetah N S SAS Prod uct Manual , Rev. B 59 9.5.2.2 T ransmi tter si gnal ch aracter istics T able 14 specifies th e signa l requireme nts at the tra nsm itter en d of a TxR x connection as me asured into the zero-le ngth te st load. All sp ecificati ons are b ased on dif ferenti al measur ement s.
60 Cheet ah NS SAS P roduct Man ual, Rev. B 9.5.2.3 Receiver signal charac teristi cs T able 1 5 defi nes the compl iance point req uirement s of t he signal at the r eceiver e nd of a T xRx con nection as measur ed into the te st loads specified in figur e 33 and figu re 34 .
Cheetah N S SAS Prod uct Manual , Rev. B 61 9.5.2.3. 2 Rec eiver jitter toler ance T able 17 d efines t he amount of jitter the receiver shall tole rate . 9.5.2.3. 3 Comp liant jit ter tes t p attern ( CJTP A T) The CJTP A T wi thin a comp liant protoco l fra me is used for all jitte r testi ng unless o therwise specifie d.
62 Cheet ah NS SAS P roduct Man ual, Rev. B 9.5.2.4 Elect rical T xRx conn ecti ons TxRx conn ections may be d ivided i nto T xRx connecti on segme nts . In a sing le T xRx connecti on indi vidual TxRx connection segmen ts may be forme d from dif fering med ia and mate rials, includi ng traces on print ed wir- ing boa rds and optical fibers.
Cheetah N S SAS Prod uct Manual , Rev. B 63 A com binatio n of a zer o-length t est load and the tran smitter compliance transf er function (TCT F) test load method ology is used for the specifi cat io n of tr ansmit ter char acteristics. This m ethodology speci fies the trans- mitter signal at t he test po int s on the req uired test loads.
64 Cheet ah NS SAS P roduct Man ual, Rev. B Figure 34 sho ws the zero- length test l oad. Figu re 3 4. Zer o-l e ngt h test lo ad Figure 35 show s an ISI loss example at 3. 0 Gbp s. Figure 35. ISI loss example at 3.0 Gbp s Figure 36 show s an ISI loss example at 1.
Cheetah N S SAS Prod uct Manual , Rev. B 65 9.5.2.5 Receiver chara cterist ics The driv e re ceiver i s A.C. coup led. The receive netw o r k termina tes the TxR x conne ction by a 100 ohm eq ui va- lent i mpedance a s specified in tabl e 18.
66 Cheet ah NS SAS P roduct Man ual, Rev. B.
Cheetah N S SAS Prod uct Manual , Rev. B 67 10.0 Seagat e T echnolo gy suppo rt service s Inter net For info rma tion regardin g Seagate pr oducts and services, vi sit www .sea gate.com . Worl dwide sup port is availa ble 24 hour s daily by email fo r your que stions.
68 Cheet ah NS SAS P roduct Man ual, Rev. B Custo mer Se rvice Op era tion s W arranty S ervice Seag ate of fer s worldw ide custom er supp ort for Seagate pro duct s. Se agate distr ibutor s, OEMs and other di rect customer s should cont act their Sea gate Customer S ervice Operati ons (CSO) repr esent ative for warra nty- related issu es.
Cheetah N S SAS Prod uct Manual , Rev. B 69 Index Numerics 12 volt pin s 55 5 volt pins 55 A abort t ask set function 41 AC coup ling 55 AC powe r re quirements 23 ACA active status 50 ACA acti ve, fa.
70 Cheet ah NS SAS P roduct Man ual, Rev. B envi ronmenta l control 29 error manage ment 33 rat es 15 error s 33 EU RoHS dire cti ve 30 F FCC rules and r egulatio ns 3 feature s 8 interface 41 firmwar.
Cheetah N S SAS Prod uct Manual , Rev. B 71 audi ble 3 noi se immunity 24 non-op erat ing 27 , 29 temper ature 26 non-op erat ing vibrati on 29 O offi ce environme nt 29 operat ing 27 , 29 option sel .
72 Cheet ah NS SAS P roduct Man ual, Rev. B operat ion 50 system cha ssis 39 T task man agement fun ctions 4 1 Abort task se t 41 Clear ACA 41 Clear task se t 41 termina te task 41 task man agement r .
.
Seag ate T echnolog y LLC 920 D isc Drive , Scott s V alley, Californ ia 95066- 4544, U SA Public ation N umber: 1 00453994, Rev . B, Printed i n USA.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Seagate ST3400755SS è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Seagate ST3400755SS - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Seagate ST3400755SS imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Seagate ST3400755SS ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Seagate ST3400755SS, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Seagate ST3400755SS.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Seagate ST3400755SS. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Seagate ST3400755SS insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
