Manuale d’uso / di manutenzione del prodotto ST3450856FC del fabbricante Seagate
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Prod uct Ma nu al Chee t ah 15 K.6 FC 10046 5943 Rev . D Aug ust 2008 ST34 50856F C ST33 00656F C ST31 46356F C ST34 50056F C (FDE) ST33 00056F C (FDE) ST31 46756F C (FDE).
©2007, 2008, Seagate T echnology LLC All righ ts reserv ed. Pub lication nu mber: 10046594 3, Rev . D Aug ust 2008 Sea gate, Sea gate T echnolog y and the W ave logo are registered t rademarks of S eagate T echno logy LLC in the United S t ates and/or other countries.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D i Cont ent s 1.0 S cope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Ap p lic able standa rds and refe r e nce document ation .
ii Cheetah 15K.6 FC Product Manual, Rev. D 6.0 P hysical/ electrical sp ecificati o ns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 6.1 A C power re quirements . . . . . . . . . . . . . . . . . . .
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D iii 9.5.4 P in description s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 9.5.5 F C-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . .
iv Cheetah 15K.6 FC Product Manual, Rev. D.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 1 1.0 S cope This ma nual describes Sea gate T echnolog y ® LLC , Cheet ah ® 15K.6 FC (Fibre Chann el) disc drives. Che etah 1 5K . 6 FC dri ves suppo rt the Fibre Ch annel Arbitrat ed Loop and S CSI Fi bre Cha nnel Protocol sp ecifi- catio ns to the extent de scribed in this manual.
2 Cheetah 15K.6 FC Product Manual, Rev. D.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 3 2.0 Appl icable st andards an d reference docum ent ation The dr ive has been d evelope d as a system p eriphe ral to the hig hest st and ards of design and constru c tion.
4 Cheetah 15K.6 FC Product Manual, Rev. D 2.1.2 Elect roma gn etic com plia nce Seag ate uses an i ndepend ent lab oratory to confirm comp liance with t he directi ves/stand ards for CE Ma rking and C-T ick Marking. The dr ive was tested in a r epre sent ative system for typica l applications.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 5 tory analyti cal validatio n testing, and an inte rnal audit ing process to ensure that all st andard operating procedu res are complied w ith. 2.3 Ref erence docume nts ANSI Fibre C hannel D ocument s X3.23 0-1994 FC Ph ysical and Signaling Int erface (FC-P H) X3.
6 Cheetah 15K.6 FC Product Manual, Rev. D.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 7 3.0 General d escription Cheet ah 15K .6 FC drive s provide high perfor man ce, hi gh cap acity dat a stor age for a variety of system s includ- ing engi neering wor kstations, n etwork server s, mainframe s, and supercompute r s.
8 Cheetah 15K.6 FC Product Manual, Rev. D 3. 1 St a ndar d feat u re s Cheet ah 15K.6 FC dr ives have the f ollowing st andard featur es: • 4-Gbi t Fibre Channe l interfa ce • Integra ted dual por.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 9 3.2 M ed ia de scri pti on The me dia used on the drive has an al uminum substr ate coated w ith a thin film m agnetic m aterial, ov ercoated with a propriet ary protecti ve layer for improved dura bili ty and envi ronment al prote ction.
10 Cheetah 15K.6 FC Product Manual, Rev. D 3.6 Fa ctor y-ins ta lled opti ons Y ou ma y order the following items whic h are incorporated at the manufacturing facility du ring production or packa ged before shipping .
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 11 4.0 Performance cha racteristics This secti on pr ovides det ailed informa tion concernin g perfor mance-re l a ted charact e risti cs and fe atures of Che etah 15 K .
12 Cheetah 15K.6 FC Product Manual, Rev. D 4.2.2 Format co m mand ex ecution time (minutes ) When chang ing sector sizes, the format times shown belo w may need to be increased by 30 minutes. Note. There is no si gnificant di f fer ence in the format time be tw een F DE and non- FDE mod els of the sa me ca paci ty .
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 13 4.4 Pr ef etch / mul t i -s eg men te d ca che co nt rol The d r ive provides a prefetch ( read look-ahea d) and mul t i-segme nted cache contr ol algo rithms that in many cases ca n enhance syst em perform ance.
14 Cheetah 15K.6 FC Product Manual, Rev. D are to b e written are al ready store d in the cache fr om a p revious read or writ e comm and. If ther e are, the respective cache segments are cleared. Th e new data i s cached for subsequent Re ad commands.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 15 5.0 Reliabili ty specifi cations The follow ing reliab ility specificat ions assume correct hos t and driv e ope ration al int erface, inclu ding all i nter- face timi ngs, power supply volt ages, environ mental requi remen ts and d r ive m ounting constraint s.
16 Cheetah 15K.6 FC Product Manual, Rev. D 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 ad dressed track. Aft er detecting an initia l seek error , the drive autom atical ly perf orms an error recovery process.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 17 present , loop oper ation m ay con tinue. If the byp ass circ uit is not pres ent, loo p ope ration will be h alted while the self test of the F C interface r uns.
18 Cheetah 15K.6 FC Product Manual, Rev. D Deter mining rate S.M. A.R.T . monitors the rate at wh ich error s occur and si gna ls a predi ctive fai lure if the rat e of degrad ed err ors increases to an unacce pt able level. T o determine rate, error events are logged and com pa red to the num ber of tota l operati ons for a given attribute.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 19 5.2.6 Drive S elf T est (DST) Drive Self T est (DST) is a t echnology design ed to recog nize dri ve fault conditions that qualify the drive as a failed unit. D ST validates the fu nctionality of the drive a t a system level.
20 Cheetah 15K.6 FC Product Manual, Rev. D 5.2.6.2. 3 Sho rt an d exten ded tes ts DST h a s two testing opti ons: 1. short 2. extended These t e sting options are de scribed in the fol lowing two subsectio ns. Each test consist s of three segments: an electr ical te st segment, a servo test segme nt, and a read/verify scan segment .
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 21 5.2.7 Product warran ty Beginn ing on the date of shi pment to the cu stomer and continuing fo r the period sp ecified in you r purchase contract, Seagate.
22 Cheetah 15K.6 FC Product Manual, Rev. D.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 23 6.0 Physical/el ect rical specific ations This secti on pro vides infor mation re lating to the physical and electrical chara cteristics of the d rive. 6.1 AC po wer requ i r em ent s None. 6.2 DC po wer requ i r em ent s The voltage and current requir ements for a single d rive a re shown below .
24 Cheetah 15K.6 FC Product Manual, Rev. D T able 2: ST3450856FC DC power requirements 1 Gb it 2 Gbit 4 Gbit No t e s ( A m ps ) ( A mps ) ( A mps ) ( Am ps ) ( A mps ) ( Am ps ) V oltage +5V + 12V [2] +5V +12V [2] +5V +12V [2] Regulation [5] ± 5% ±5% [2] ± 5% ± 5% [2] ± 5% ± 5% [2] Av g idle current D CX [1 ] [7 ] 0.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 25 T able 4: ST3300656FC DC power requirements 1 Gbit 2 Gbit 4 Gbit N ot e s ( A m ps ) ( A mps ) ( Am ps ) (A m ps) ( A m ps ) ( A mps ) V oltage +5V +12V [2] +5V +12V [2] +5V +12V [2] Regulation [5] ± 5% ± 5% [2] ± 5% ±5% [2] ± 5% ± 5% [2] Av g idle current D CX [1 ] [7 ] 0.
26 Cheetah 15K.6 FC Product Manual, Rev. D [1] Measur ed with average r eading D C ammete r . Instan taneous +12V current peaks will exceed these val - ues.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 27 Motor command. [5] See p aragr aph 6.2.1, "Con ducted noise imm unity ." S pecified volt age tolerance includes rippl e, noise, and transient response.
28 Cheetah 15K.6 FC Product Manual, Rev. D Figure 1. T ypical ST3450856FC current profiles.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 29 Figure 2. T ypical ST3450056FC curren t profiles.
30 Cheetah 15K.6 FC Product Manual, Rev. D Figure 3. T ypical ST3300656FC current profiles.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 31 Figure 4. T ypical ST3300056FC curren t profiles.
32 Cheetah 15K.6 FC Product Manual, Rev. D Figure 5. T ypical ST3146356FC current profiles.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 33 Figure 6. T ypical ST3146756FC curren t profiles.
34 Cheetah 15K.6 FC Product Manual, Rev. D 6. 3 Po wer diss ipatio n 450GB m o dels T ypical power dissi pation under idle condi tions in 4 Gbi t opera tion is 12.09 wat ts (41.25 BTUs per hou r). T o obta in operating power for typ ical random rea d operations, re fer to the following I/O rate curve ( see Figure 7).
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 35 300GB m o dels T ypical power dissi pation under idle condi tions in 4 Gbi t opera tion is 1 1.04 watt s (37.67 BT Us per hour). T o obta in operating power for typ ical random rea d operations, re fer to the following I/O rate curve ( see Figure 7).
36 Cheetah 15K.6 FC Product Manual, Rev. D 146GB m o dels T ypical power dissi pation under idle condi tions in 4 Gbi t opera tion is 9.51 watt s (32.45 BTUs per hour). T o obta in operating power for typ ical random rea d operations, re fer to the following I/O rate curve ( see Figure 7).
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 37 b. Non -operating –40° to 1 58°F (–40° to 70°C) package ambi ent with a maximum gradient of 36°F (20°C) per hour . This speci fication assumes that th e dr iv e is p ackaged in the shipping cont ain er designe d by Seagate for use w ith drive.
38 Cheetah 15K.6 FC Product Manual, Rev. D 6.4.4 Shock and vibration Shock and vibrati on limit s specified in this document ar e measured d irectly on the dr ive chassis.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 39 Figu re 1 1 . Re c o mme nd ed mou ntin g Z Y X Z Y X.
40 Cheetah 15K.6 FC Product Manual, Rev. D 6.4.4.2 V ibrat ion a. Operati ng—nor mal The dr ive as inst alled for normal operation , shall comply with th e complete speci fied perf ormance while subjected t o continuous vibr ation not exce eding 10–500 Hz @ 0.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 41 Users shoul d use cau tion exposing an y electronic component s to uncontrolled chemical poll utant s and corro- sive chemi cals as el ectroni c dr ive com ponen t reliab i lity can be af fected by the i nst allation environmen t.
42 Cheetah 15K.6 FC Product Manual, Rev. D 6. 5 M echa nica l s peci fic ation s The follow ing nominal dimensions ar e exclusive of the decorati ve front pa nel accessory . Ho w ever , dimensions of the fro nt panel ar e shown in fi gu re belo w . Refer to Figure 1 2 for detai led mou nting conf iguration di me nsions.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 43 7.0 Defect and error management Seag ate continues to use innovative techno logies to ma nage defect s and errors. T hese technol ogies are designed to increase da ta integr ity , perform drive se lf-maintena nce, and vali date pro per drive o peration.
44 Cheetah 15K.6 FC Product Manual, Rev. D read or re-write a ttempt. The maximum le vel used by the drive in LBA recover y is de termined by the read and writ e retry coun ts. T able 8 equates the read and wri te retry count with the maxim um possible recovery ti me for read and write recover y of ind ividual LBA s.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 45 [1] These va lues are subje ct to change. Setting these r etry counts to a value bel ow the default setti ng could result in a n increased unrecover ed error rate w hich may excee d the value given i n this pro duct manual.
46 Cheetah 15K.6 FC Product Manual, Rev. D avoid pla cing data in suspect locations o n the medi a. Unreadable and recovered e rr o r sites will b e logged or reall ocated per ARRE/A WRE settings.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 47 8.0 Inst allation Cheet ah 15K.6 FC disc drive inst allation is a plug- and-play pro cess. There are no jumper s, switch es, or termi- nators on th e driv e. Simply plug the dr ive i n to the host’s 40- pin Fibre Channe l backp anel connector (FC - SCA) — no cables ar e requi red.
48 Cheetah 15K.6 FC Product Manual, Rev. D If forced ai r is necessary , possible air- flow p atterns are shown in Fig ure 13. The air-fl ow pattern s are crea ted by fans either forcing or draw ing air as shown in the illustrat ions.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 49 cally isolating shock mounts . If it is desired for t he system chassis to not be connected to the HDA/PCBA ground , the system s integrator o r user must p r ovide a n oncon ductive (electrically isolating ) m ethod of mount- ing the d rive in the host equipment.
50 Cheetah 15K.6 FC Product Manual, Rev. D.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 51 9.0 Interface requ i rement s This secti on pa r tiall y describes the interface re quirement s as implemented on C h eetah 1 5K . 6 FC driv es. Addi- tion al informatio n is provided in the Fibre Ch annel Interf ace Manual ( part n umber 1002930 70).
52 Cheetah 15K.6 FC Product Manual, Rev. D 9.1. 2 Fib re Cha n nel t as k mana gem ent fu nct ions T able 10 l ists the F ibre Channel S CSI Fibre Chan nel Protocol (FC SC SI FC P) t ask management fun ctions sup- ported .
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 53 9.1.4 Fibre Ch annel port login T able 12 id entifies the required content of the N_P ort Login (PLOGI) payload from an initiator .
54 Cheetah 15K.6 FC Product Manual, Rev. D 9.1.5 Fibr e Chann el port login accept T able 13 i dentifies th e N_Port Login a ccess payload values. 9.1.6 Fibr e Chann el Process Lo gin T a ble 14 list s the process l ogin pa yload data. XX Indicates fields that ar e not us ed.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 55 9.1.7 Fibr e Chann el Process Lo gin Accept T a ble 15 list s Cheetah 15 K.6 FC process log in accept p ayload dat a. 9.1.8 Fibre Ch annel fabr ic login T a ble 16 list s the fabric l ogin payl oad fr om the dr ive.
56 Cheetah 15K.6 FC Product Manual, Rev. D 9.1.9 Fibr e Chann el fabric ac cept lo gin T a ble 17 list s the required content of the Fa bric Login Accept ( A CC) payload from the fabric.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 57 9.1.10 F ibre Ch annel Ar bitrated L oop opt ions T a ble 18 list s the FC-AL options suppor ted by Cheet ah 15K .6 FC drives. 9.2 Dual port su pport Che etah 1 5K .6 FC drives have two inde pendent F C-AL po rts.
58 Cheetah 15K.6 FC Product Manual, Rev. D T able 19: Supported commands Comma nd code Supp ort e d (Y/N ) [4] Com ma nd nam e Exe cutable state of st an dard SC SI comm ands in the pr esence of LB A .
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 59 Y Pow er control pag e (1Ah) Y Info rmation ex ceptions c ontrol page (1Ch ) Y Bac kground Sc an mode subpage (01h) 1Bh Y St ar t unit/ stop unit Y Y Exec.
60 Cheetah 15K.6 FC Product Manual, Rev. D 3Ah N Copy a nd verify 3Bh Y Write buf f er N Y Check C ondition Chec k Condit ion (all mod es excep t modes 4h - 7h, 0E h, and 0Fh ) Y N E xecu t able E xec.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 61 [1] Che etah 15 K.6 FC dr ives can format to 5 12, 520, 52 4 or 528 bytes per logical block. [2] Wa r n i n g . Power lo ss during fla sh programmin g can resul t in fi rmware co rruption. This usual ly makes the driv e inoperab le.
62 Cheetah 15K.6 FC Product Manual, Rev. D [3] Refe rence Mod e Sense comma nd 1Ah for mo de pages supp orted. [4] Y = Y es. Comm and is supported. N = No.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 63 When power is appli ed to the dri ve, it t akes saved val ues fro m the media and stores them as current val - ues in volatile memo ry . It is not possible to change the current values (or the saved values) with a Mode Select command before the drive a chieves oper ating spee d and is “ready .
64 Cheetah 15K.6 FC Product Manual, Rev. D T able 21: Mode Sense dat a saved , default and changeable values for ST3450856FC/ST3450056FC drives MODE DATA HEADER: 00 be 00 10 00 00 00 08 MODE PAGES: DE.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 65 T able 22: Mode Sense dat a def ault and changeable values for ST3300656FC/S T3300056FC drives MODE DATA HEADER: 00 be 00 10 00 00 00 08 MODE PAGES: DEF 8.
66 Cheetah 15K.6 FC Product Manual, Rev. D T able 23: Mode Sense dat a def ault and changeable values for ST3146356FC/S T3146756FC drives MODE DATA HEADER: 00 be 00 10 00 00 00 08 MODE PAGES: DEF 81 0.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 67 9. 4 M iscel la neous oper ati ng fe atur es a nd c ondit ions T a ble 24 l ists va rious f eatures an d conditio ns. A “Y” i n the suppor t column indica tes the featu re or con dition is support ed. An “N” in th e support co l umn ind icates the feat ure or con dition is no t supported.
68 Cheetah 15K.6 FC Product Manual, Rev. D 9.5 FC -AL ph ysic al inte rface Figure 14 shows the location o f the J1 Fibre C hannel si ngle conn ection att achment (FC-SC A). Figure 16 pro- vides the d i mensi ons of th e FC-SCA connector . Det ails of the ph ysical, electrical, an d l ogical characteristi cs are provide d within this secti on.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 69 9.5.2 Conn ector req u irem ents The F C-AL SC A device conn ector is il lustrated i n Figure 16. Figu re 16 .
70 Cheetah 15K.6 FC Product Manual, Rev. D T able 27: FC-SCA p in descriptions *Short p ins in mating backp anel connector . [1] This pin may be connecte d to external l ogic to d etect the presen ce of the drive. The drive conn ects this pin to the comm on ground .
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 71 9.5.6 P ower Power is supplied through the F C-SCA with support for +5 volt s and +12 vo lts. All of the voltag e pins in the drive con nector are the sa me length. Four 12 volt pins provi de +12 volt power to the drive.
72 Cheetah 15K.6 FC Product Manual, Rev. D 9.5.8 Active L ED Out The Ac tive LED Ou t signal is driven b y the drive as in dicated in T able 28. The Ac tive LED Out signal is design ed to pull do wn the cathode of an LED. T he anode is att ached to the proper +5 volt supply through an appr opriate current limi ting resistor .
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 73 9.5.1 1 SEL_6 thr ough S EL_0 ID l ines The S EL_6 throu gh SEL_0 ID lines de termine dr ive address, and, option ally , for an Enclosure Servic es Inter - face. W hen th e Parall el E SI line is high, the en cl osure backp ane l must pr ovide add ress info rma tion on the SEL line.
74 Cheetah 15K.6 FC Product Manual, Rev. D T able 30: Arbitrated loop p hysical address (AL_P A) values AL_ P A (hex) SEL I D (hex) Setting (dec) AL_P A (hex) SEL I D (hex) Setting (dec) AL_P A (hex) .
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 75 9.5.12 Dev ice control co des The dr ive input s a Device Con trol Code on the DEV _CTRL_C ODE lines at pow er up to de termine the l ink rate on the Fi bre Channe l port s. Both ports r un at the same rat e.
76 Cheetah 15K.6 FC Product Manual, Rev. D 9.6.2 LED d river sign als Fault and Active LED signal s are located in the FC-SC A connector (J1) . See T able 33 for the output character- istics of the L ED drive signals. 9.6.3 FC Diffe rential ou tput The ser ial output sign al volta ge character istics are provi ded in T able 34.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 77 Figure 19 provides the da ta valid eye diagram for typical and m inimum requ irement s to recover data at the speci fied inte rface err or rate.
78 Cheetah 15K.6 FC Product Manual, Rev. D.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 79 10.0 Seagate T echnology suppo r t service s Inter net For info rmation regardi ng Seagate pr oducts an d services, visit www .sea ga te.com . Wo rldwide sup port is availa ble 24 hour s daily by email fo r your questions.
80 Cheetah 15K.6 FC Product Manual, Rev. D Custo mer Se rvice Opera tion s W arranty Ser vice Seag ate of fer s worldw ide custom er supp ort for Seagate pro duct s. Seagate distri butors, OEM s and other direct customer s should cont act their Seagate Custom er Service Operation s (CSO) represent ative for wa rranty- related issu es.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 81 Index Numerics 12 volt pin s 71 3rd pa rty reserve comm and 61 5 volt pins 71 A Abor t Sequence (A BTS) 51 abort t ask set function 52 AC coup ling 70 AC .
82 Cheetah 15K.6 FC Product Manual, Rev. D D DAR 46 data he ads read/wr ite 11 data ra te inte rnal 11 data tr ansfer rate 12 data valid e ye 77 Date code page command 5 8 DC power 69 requir ements 23.
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 83 firmware 8 corrup tion 61 Firmw are do wnload o ption co mmand 60 Firmw are nu mbers pag e command 58 flawe d sector re allocation 8 FLOGI received on Por.
84 Cheetah 15K.6 FC Product Manual, Rev. D Autom atic contingent allegiance 67 Defe rred er ror handling 67 FC-AL selective r eset 67 Para meter rounding 67 Queue ta gging 67 Reporti ng actual r etry .
Cheetah 1 5K.6 FC Pro duct Manua l, Rev. D 85 requir ements, AC 23 requir ements, DC 23 sequencing 27 Power control pag e (1Ah) comm and 59 pow er distri bution 3 power failure warning 75 Pref etch co.
86 Cheetah 15K.6 FC Product Manual, Rev. D shock 37 , 38 and vibra tion 37 shock mount 49 signal characte ristics 75 LED dr iver 7 6 single-un it shipping pack kit 1 0 SMART 9 , 17 SMP = 1 in Mode S e lect command 67 SO 53 , 56 spindl e brake 8 Stacked connection r eq.
.
Seag ate T echno logy L LC 920 D isc Drive , Scott s V alley , Califo r ni a 95066- 4544, USA Public ation N umber: 1 00465943, Rev . D, Pr inted in 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 ST3450856FC 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 ST3450856FC - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Seagate ST3450856FC imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Seagate ST3450856FC ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Seagate ST3450856FC, 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 ST3450856FC.
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 ST3450856FC. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Seagate ST3450856FC 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.
