Seagate ST9500431SS manual

Product Manual Constellation ® SAS 100538693 Rev . E September 20 10 St andard Model ST9500430SS Self-Encrypting Drive Model ST9500431SS SED FIPS 140-2 Model ST9500432SS[...]

Revision history © 2010, Seagate T echnology LLC All rights reserved. Publication number: 100538693, Rev . E September 2010 Seagate, Seagate T ech nology and the W ave logo ar e regi stered trademarks of Seagate T echnology LLC in the United S tates and/or o ther countries. Constellation and SeaT o ols are either trademarks or registered trademark[...]

Constellation SAS Prod uct Manual, Rev. E i Content s 1.0 Seagate Technology support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3.0 Appl[...]

ii Constellation SAS Pr oduct M anual, Rev. E 7.5 Environmental limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 7.5.1 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 7.5.2 Relative humidit y . . . . . . . . . [...]

Constellation SAS Produc t Manual, Rev. E iii 12.4.7 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 12.5 Signal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 12.5.1 Ready LED Out . . . . . . . . [...]

iv Constellation SAS Pr oduct M anual, Rev. E[...]

Constellation SAS Prod uct Manual, Rev. E 1 List of Figures Figure 1. 500GB model current profiles 25 Figure 2. 500GB (3 Gbit) DC current and power vs. input/output operation s per second . . . . . . . . . . . . . . . . . . . . . . . 26 Figure 3. 500GB (6 Gbit) DC current and power vs. input/output operation s per second . . . . . . . . . . . . . .[...]

2 Constellation SAS Prod uct Manual, Rev. E[...]

Constellation SAS Prod uct Manual, Rev. E 1 1.0 Seagate T echnology support services SEAGA TE ONLINE SUPPORT and SERVICES For information regarding pr oducts and services, visit http://www .sea gate.com/www/en-us/ about/contact_us/ Available ser vices include: Presales & T echnical support Global Support Services telephone nu mbers & busine[...]

2 Constellation SAS Prod uct Manual, Rev. E 2.0 Scope This manual describes Seagate T echnology ® LLC, Constellation ® SAS (Serial Att a ched SCSI) disc drives. Constellation drives support the SAS Prot ocol specifications to the extent described in th is manual. The SAS Interface Manual (part number 100293071 ) describes the genera l SAS charact[...]

Constellation SAS Prod uct Manual, Rev. E 3 3.0 Applicable st andards an d reference docume ntat ion The drives documented in this manual have been developed a s system per ipher als to th e hi ghest st andards of design and construction. The drives depends on host equipment to prov ide adequate power and environment for optimum performan ce and co[...]

4 Constellation SAS Prod uct Manual, Rev. E 3.1.2 Electromagnetic complian ce Seagate uses an in dependent laboratory to confirm comp liance with the directives/standa rds for CE Marking and C-T ick Marking. The drive was tested in a represen t ative system for typical applications. The selected sys- tem represe nts the most pop ula r ch ar ac te r[...]

Constellation SAS Prod uct Manual, Rev. E 5 3.1.3 European Union Restr iction of Hazardous Subst ances (RoHS) The European Un ion Restriction of Hazardous Substances (RoHS) Directive, restricts the presence of chemi- cal subst ances, including Lead , Cadmium, Mercur y , He xavalent Chromium, PBB and PBDE, in electronic pr od- ucts, ef fective July [...]

6 Constellation SAS Prod uct Manual, Rev. E 4.0 General description Constellation drives pro vide high performance, high ca p acity data storage for a variety of systems including engineering workst ations, network servers, mainfram es, and supercomputers. The Serial Attached SCSI inter- face is designed to meet next-generation computing de mands f[...]

Constellation SAS Prod uct Manual, Rev. E 7 4.1 St andard features Constellation drives have t he following st andard features: • Perpendicu lar recording techno logy • 1.5 / 3 / 6 Gbit Serial Att ached SCSI (SAS) interface • Integrated dual port SAS controller suppor ting the SCSI protocol • Support for SAS exp anders and fanout adapters ?[...]

8 Constellation SAS Prod uct Manual, Rev. E 4.3 Performance • Programmabl e multi-segmentable cache buf fer • 600 Mbytes/sec maximum in stantaneo us data transfers. • 7200 RPM sp indle. Average latency = 4.16 mse c • Background processing of queu e • Support s start and stop commands (spindle stop s spinning) • Adaptive seek velocity; i[...]

Constellation SAS Prod uct Manual, Rev. E 9 4.7 Factory-inst alled options Y ou may order the following items whic h are incorporated at th e manufacturing facility during production or packaged befo re shipping. Some of the options availabl e are (not an exhaustive list of possible optio ns): • Other cap acities can be ordered depending on spari[...]

10 Constellation SAS Pr oduc t Manual, Rev. E 5.0 Performance characteristics This section provides deta iled information conce rning perf ormance- related characterist ics and features of Con- stellation drives. 5.1 Internal drive characteristics ST9500430SS, ST950043 1SS & ST9500432SS Drive capacity 500 Gbytes (formatted, rounded off value) R[...]

Constellation SAS Produc t Manual, Rev. E 11 5.2.2 Format command exec ution time for 512-byte se ctors (minutes) ST9500430SS, ST9500431SS & ST95 00432SS Maximum (with verify) 216 Maximum (without verify) 108 Note. Th ere is approximately a 1.5 increase in time to format a SED drive versus a non-SED drive of the same capacity . 5.2.3 Ge neral p[...]

12 Constellation SAS Pr oduc t Manual, Rev. E 5.4 Prefetch/multi-segmented cache control The drive provides a prefetch (read look-ahead) and mu lti-segmented cache control algorithms that in many cases can enhance system performance . Cache refers to the drive buf fer storage space when it is used in cache operations. T o select this feature, the h[...]

Constellation SAS Produc t Manual, Rev. E 13 5.5.1 Caching write dat a Write caching is a write op eration by the dr ive that m akes us e of a driv e buffer storag e area where th e data to be written to the med ium is stored while the drive performs the Write comm and . If read caching is en abled (RCD=0), then dat a written to t he medium is ret [...]

14 Constellation SAS Pr oduc t Manual, Rev. E 6.0 Reliability specifications The following reliability specifications assume correct host and drive operational interfac e, including all inter- face timings, power supply volt ages, environmental requirement s and drive mounting constraint s. 6.1 Error rates The error rates st ated in this manual ass[...]

Constellation SAS Produc t Manual, Rev. E 15 6.1.3 Seek errors A seek error is defined as a failure of the drive to posi tion the heads to the addressed track. Af ter detecting an initial seek error , the drive automatically perfor ms an er ror recovery process. If t he error recove ry process fails, a seek positioning error (E rror code = 15h or 0[...]

16 Constellation SAS Pr oduc t Manual, Rev. E Caution. The drive motor must come to a complete stop prior to changing the plane of operation. This time is required to insure dat a integrity . 6.2.4 S.M.A.R.T . S.M.A.R.T . is an acronym for Self-Monitoring Analysis and Reporting T e chno logy . This technology is intended to recognize conditions tha[...]

Constellation SAS Produc t Manual, Rev. E 17 S.M.A.R.T . measures error rates. All errors for e ach mo nitored attribute are recorded. A counter keeps track of the number of erro r s fo r the current interval. Th is counter is referred to as the Failure Counter . Error rate is the number of er rors per op eration. The algorith m that S.M.A.R.T . us[...]

18 Constellation SAS Pr oduc t Manual, Rev. E 6.2.6 Driv e Sel f T est (DST ) Drive Self T est (DST) is a technology desi gned to recogn ize drive fault cond itions th at qualify the drive as a failed unit. DST validates the functi onality of the drive at a system level. There are two test coverage op tions implemented in DST : 1. Extended test 2. [...]

Constellation SAS Produc t Manual, Rev. E 19 6.2.6.2. 3 Short a nd exten ded tests DST has two testing options: 1. short 2. extended These testing options are describ ed in the following two subsections. Each test consists of three segment s: an electrical te st segment, a servo test segment, and a read/verify scan segment. Short test (Function Cod[...]

20 Constellation SAS Pr oduc t Manual, Rev. E 6.2.7 Pro duct warra nty Beginning on the date of shipme nt to the customer an d continuing for the p eriod specified in your purchase contract, Seagate war rants that each product (in cluding components and suba ssemblies) that fails to function properly under normal use due to d efect in materia ls or[...]

Constellation SAS Produc t Manual, Rev. E 21 7.0 Physical/electrical specifications This section provides information relating to the physical and electrical char acteristics of the drive. 7.1 PowerChoice TM power manageme nt Drives using the load/un load architecture provide pr ogrammable power manage ment to tailor systems for per- formance and g[...]

22 Constellation SAS Pr oduc t Manual, Rev. E 7.1.1 PowerChoice reporting methods PowerChoice TM provides these reporting me thods for trackin g purposes: Request Sense command report s • Current power conditio n • Method of en try Note. Processing the Request Sense command does not impact the drive ’s power save state. Mode Sense command rep[...]

Constellation SAS Produc t Manual, Rev. E 23 [1] Measured with aver ag e re ad in g DC am m et er . [2] Instant aneous +12V current pe ak s will exceed these values. [3] Power supply at nomina l voltage . N (number of dr ives tested) = 6, 35 Degrees C ambient. [4] For +12 V , a –10% tolerance is allowed during initial spindle start but must retur[...]

24 Constellation SAS Pr oduc t Manual, Rev. E [5] See +12V curr ent profile in Figure 1. [6] This condition occurs after OOB and S peed Negotiation comple tes but before the drive has received the Notify S pinup primitive. [7] See paragr aph 7.3.1, "Cond ucted noise immunity ." S pecified voltage tolerance includes ripple, noise, and tran[...]

Constellation SAS Produc t Manual, Rev. E 25 7.3.3 Current profiles The +12V (top) and +5V (bottom) curre nt profiles for the Constellation drive s ar e shown b elow . Figure 1. 500GB mode l cu rrent profiles Note: All times and currents are typical. See T able 2 for maximum current requirements.[...]

26 Constellation SAS Pr oduc t Manual, Rev. E 7.4 Power dissip ation ST9500430SS, ST950043 1SS and ST9500432SS in 3 Gbit operation Please refer to T able 2 for power dissipa tion numbers. T o obtain ope rating power for typical random read o peratio ns, refer to th e following I/O rate cu rve (see Figure 2). Locate the typical I/O ra te for a drive[...]

Constellation SAS Produc t Manual, Rev. E 27 ST9500430SS, ST950043 1SS and ST9500432SS in 6 Gbit operation Please refer to T able 2 for power dissip ation numbers. T o obtain ope rating power for typical random read o peratio ns, refer to the following I/O rate curve (see Figure 3.). Locate the typical I/O r ate for a drive in your syst em on the h[...]

28 Constellation SAS Pr oduc t Manual, Rev. E 7.5 Environment al limit s T emperature and hum idity values experienced by the d riv e must be such that condens ation does not occur on any drive part. Altitude and atmospheric pressure specif ica tions are referenced to a standard day at 58.7° F (14.8°C). M aximum wet b ulb temperat ure is 82°F ( [...]

Constellation SAS Produc t Manual, Rev. E 29 7.5.2 Relative humidity The values below assume that no condensation on the dr ive occurs. a. Operating 5% to 95% non-condensing re lative humidity with a maximum gradient of 20% per hour . b. Non-operatin g 5% to 95% non-condensing relative humidity . 7.5.3 Effective altitude (sea level) a. Operating ?[...]

30 Constellation SAS Pr oduc t Manual, Rev. E The drive subj ected to nonrepetitive shock not exceedin g 200 Gs at a maximum duration of 0.5 msec (half sinewave) does not exhibit de vice damage or performanc e degradation. Shock may be applied in th e X, Y , or Z axis.[...]

Constellation SAS Produc t Manual, Rev. E 31 d. Packaged Disc drives shipped as loose load (not p alletized) general freight will be packaged to withs tand drop s from heights as define d in the table below . For additional deta ils refer to Seagate specifications 3019 0-001 (under 100 lbs/45 kg) or 30191-001 (over 10 0 lbs/45 Kg) . Package size Pa[...]

32 Constellation SAS Pr oduc t Manual, Rev. E 7.5.4.2 Vibration a. Operating—normal The drive as ins talled for normal ope ration, shall comply with the complete sp ecified performance while subjected to continuous vi bration not exceeding 5 - 22 Hz 0.25 Gs, limited displacement 22 - 350 Hz 0.5 Gs 350 - 500 Hz 0.25 Gs Vibr ation may be applied in[...]

Constellation SAS Produc t Manual, Rev. E 33 7.5.7 Aco ustics Sound powe r during idle m ode shall be 2.3 bels typ ical when measu red to ISO 7779 specificat ion. There will not be any discrete tones more than 10 dB above the masking noise on ty pical drives when mea- sured according to Seagate specificat ion 30553-001. There w ill not be an y tone[...]

34 Constellation SAS Pr oduc t Manual, Rev. E 7.6 Mechanical specifications The following nominal dimension s are exclusive of the de corative front panel accesso ry . However , dimensions of the front pane l are shown in figure below . Refer to Figure 6 for det ailed mountin g configuration dimensions. See Section 1 1.3, “Drive mounting. ” Fig[...]

Constellation SAS Produc t Manual, Rev. E 35 8.0 About FIPS The Federal Information Proce s sing S tandard (FIPS) Publication 140- 2, FIPS PU B 140-2, is a U.S. govern- ment computer securi ty st andard used to accre dit cryptogr aphic modules. It is titled “Security Require ment s for Cryptographic Mo dule s”. Th e initial pub licat ion was on[...]

36 Constellation SAS Pr oduc t Manual, Rev. E 9.0 About self-e ncrypting drives Self-encrypting d rives (SEDs) offer encryption and secu rity services for the protection of stored dat a, com- monly known as “protection of data at rest.” These drives are compliant with the T rusted Computing Group (TCG) Enterpri se S tor ag e Specificat ions as [...]

Constellation SAS Produc t Manual, Rev. E 37 9.2.2 L ocking SP The Locking SP contro ls read/write a ccess to the media and the cryptographi c erase feature. Access to the Locking SP is available using the BandMasterX or Er aseMaster passwords. Since the drive owner can define up to 16 data bands on the drive, each dat a band has its own password c[...]

38 Constellation SAS Pr oduc t Manual, Rev. E 9.6 Cryptographic erase A significant featur e of SEDs is the ability to perfo rm a cryptographic er ase. This involves the host telling the drive to change the dat a encryption key for a par ticu lar ban d. On ce chang ed , the dat a is no longer recoverable since it was written with one key and will b[...]

Constellation SAS Produc t Manual, Rev. E 39 10.0 Defect and er ror management Seagate continues to use innova tive technologies to manage defects and errors. The se technologies are designed to increase dat a integrity , perform drive self-maintenance, and validat e pr op e r dr ive op e ra tio n. SCSI defect an d error mana gement involve s drive[...]

40 Constellation SAS Pr oduc t Manual, Rev. E The drive firmware err or recovery algorithms consist of 12 levels for read recoveries and five levels for write. Each level may consist of multiple st eps, where a step is defined as a re cove ry function involving a single re- read or re-write atte mpt. The maximum level used by the drive in LBA recov[...]

Constellation SAS Produc t Manual, Rev. E 41 10.4 Background Media Scan Background Media Scan ( BMS) is a self-initiated medi a scan. BMS is defined in the T10 docume nt SPC-4 available from the T10 co mmittee. BMS performs sequentia l reads across the entire pack of the media while the drive is idle. In RAID ar rays, BMS allows hot spare drives to[...]

42 Constellation SAS Pr oduc t Manual, Rev. E 10.7 Idle Read After W rite Idle Read After W r ite (IRA W) utilizes idle time to verify the integrity of rece ntly written data. During idle periods, no active system request s, the drive reads recently writte n data from the media and comp ares it to valid write command dat a re sid ent in the dr ive [...]

Constellation SAS Produc t Manual, Rev. E 43 1 1.0 Inst allation Constellation disc drive installatio n is a plug-and-play process. There are no jumpers, switches, or terminators on the drive. SAS drives are designed to be used in a host system that provides a S AS-compatible backplane with bays designed to accommo date the drive. In su ch systems,[...]

44 Constellation SAS Pr oduc t Manual, Rev. E 1 1.2 Cooling Cabinet cooling must be desig ned by the customer so that the a mbient temperat ure immediately sur rounding the drive will not exceed temperat ure conditions specified in Section 7.5.1, "T emperature." The rack, cabinet, or drawer envir onment for the driv e must provide heat re[...]

Constellation SAS Produc t Manual, Rev. E 45 1 1.3 Drive mounting Mount the drive usin g the bottom or side mounting hole s . If you mou nt the drive using th e bottom holes, ensure that you do not physically d istort the d rive by at tempting to mount it on a stiff, non-flat surface. The allowable mountin g surface stif fness is 80 lb/i n (14.0 N/[...]

46 Constellation SAS Pr oduc t Manual, Rev. E 12.0 Interface requirement s This section partially describes the interface r equirements as implemented on Constellation drives. Additional information is pr ovided in the SAS Interface Manual (part numb er 100293071). 12.1 SAS features This section lists the SAS-sp ecific features supported by Cons te[...]

Constellation SAS Produc t Manual, Rev. E 47 12.2 Dual port support Constellation SAS dr ives have two independent port s. Th ese ports may be connecte d in the same or different SCSI domains. Each drive port has a unique SAS address. The two ports have the cap ab ility of independent port clocki ng (e.g. both ports can run at 6Gbit/sec or the firs[...]

48 Constellation SAS Pr oduc t Manual, Rev. E 12.3 SCSI commands supported T able 6 lists the SCSI commands supported by Constella tion drives. T able 6: Supported commands Command name Command code Supported Change Definitio n 40h N Compare 39h N Copy 18h N Copy and V erify 3Ah N Format Unit [1] 04h Y DPRY bit supported N DCRT bit supported Y STPF[...]

Constellation SAS Produc t Manual, Rev. E 49 Last n Deferred Errors or Asyn chronous Events pag e (0Bh) N Last n Error Events p age (07h) N Non-medium Error p age (06h) Y Pages Supported list (00h) Y Read Error Counter page (03h) Y Read Reverse Error Counter p age (04h) N Self-test Results page (10h) Y St art-st op Cycle Counte r page (0Eh) Y T emp[...]

50 Constellation SAS Pr oduc t Manual, Rev. E Read Cap acity (10) 25h Y Read Cap acity (1 6) 9Eh/10h N Read Defect Data (10) 37h Y Read Defect Data (12) B7h Y Read Long 3Eh Y (non-SED drives only) Read Long (16) 9Eh/1 1h N Reassign Bl ocks 07h Y Receive Diagnostic Results 1Ch Y Supported Diagnostics pages (00h) Y T ranslate pa ge (40h) Y Release 17[...]

Constellation SAS Produc t Manual, Rev. E 51 [1] Constellation dr ives can format to 512, 520 or 52 8 bytes per logical block. [2] Wa r n i n g . Power loss during flash pr ogramming can result in firmware corruption. This usually makes the drive inoperable. [3] Reference Mode Sense comma nd 1Ah for mode pages supported. [4] Y = Y es. Command is su[...]

52 Constellation SAS Pr oduc t Manual, Rev. E 12.3.1 Inquiry data T able 7 lists the Inquiry command data th at the drive should return to the initi ator per the format given in the SAS Interfac e Manual . T able 7: Constellation inquiry da t a Bytes Data (hex) 0-15 00 00 xx** 12 8B 00 PP 0A 53 45 41 47 41 54 45 20 V end or ID 16-31 [53 54 39 35 30[...]

Constellation SAS Produc t Manual, Rev. E 53 Select command before the dr ive a chieves op er ating spee d a nd is “read y .” An atte mpt to do so re sult s in a “Check Condition” status. On drives requiring uniq ue saved values, the required unique sa ved values are stored into the sa ved val - ues storage location on the media prior to sh[...]

54 Constellation SAS Pr oduc t Manual, Rev. E T able 8: Mode Sense dat a changeable and default values f or 500GB drives MODE DATA HEADER: 01 92 00 10 00 00 00 08 BLOCK DESCRIPTOR: 3a 38 60 30 00 00 02 00 MODE PAGES: DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff DEF 82 0e 00 00 00 00 00 00 00 00 01 3a 00 00 00 00 C[...]

Constellation SAS Produc t Manual, Rev. E 55 12.4 Miscellaneous operating features and conditions T able 9 lists variou s features and conditions. A “ Y” in the support column indicates the feature or condition is supported. An “N” in the support column indicates the feat ure or condition is not supported. T able 9: Miscellaneous features S[...]

56 Constellation SAS Pr oduc t Manual, Rev. E 12.4.1 SAS physical interfac e Figure 10 shows the location of the SAS device connector J1. Figur es 1 1 and 12 provide th e dimensions of the SAS connector . Details of the physical, electrical, an d logical characteristics are provided wi thin this section. The operational aspects of Seagate’ s SAS [...]

Constellation SAS Produc t Manual, Rev. E 57 Figure 1 1. SAS d evice plug 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 (3[...]

58 Constellation SAS Pr oduc t Manual, Rev. E Figure 12. SAS device p lug dimens ions (detail) 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 [...]

Constellation SAS Produc t Manual, Rev. E 59 12.4.2 Physical characteristic s This section defines phys ical inter fac e co nnector . 12.4.3 Connector requirement s Contact your preferred connector man ufacturer for mati n g part information. Part numbers for SAS connectors will be provided in a futu re revision of this publicat ion when production[...]

60 Constellation SAS Pr oduc t Manual, Rev. E 12.4.6 SAS transmitte rs and receivers A typical SAS differential copper transm itter and receiver p air is shown in Figure 13. The rece iver is AC cou- pling to eliminate ground shif t noise. Figure 13. SAS transmitters and receivers 12.4.7 Power The drive receives power (+5 volts and +12 volts) throug[...]

Constellation SAS Produc t Manual, Rev. E 61 The Ready LED Out signal is designed to pu ll down the cathode of an LE D. The anode is attached to th e proper +3.3 volt supply throu gh an appropriate current limiting resistor . The LED a nd the current limiting resis- tor are ext ernal to the d rive. See T able 13 for the ou tput charac teristics of [...]

62 Constellation SAS Pr oduc t Manual, Rev. E[...]

Constellation SAS Produc t Manual, Rev. E 63 Index Numerics 12 volt pins 60 5 volt pins 60 6 Gbps 61 A abort task set function 46 AC coupling 60 AC power requirements 22 ACA active status 55 ACA active, faulted initiator status 55 acoustics 33 active LED Out signal 60 actuator 8 assembly desig n 6 adaptive caching 55 Admin SP 36 AES-128 data encryp[...]

64 Constellation SAS Pr oduc t Manual, Rev. E description 6 DFE 61 dimensions 34 disc rota tion speed 10 drive 32 drive characteristics 10 drive failure 15 Drive Locking 37 drive mounting 34 , 45 drive select 59 dual port support 47 E electrical description of co nn e cto r 59 signal characteristics 60 specifications 21 electromagnetic compatibilit[...]

Constellation SAS Produc t Manual, Rev. E 65 L latency average rotational 10 , 11 Locking SP 36 , 37 LockOnReset 37 logical block address 12 logical block reallocation scheme 7 logical block size 7 , 11 logical segments 12 M maintenance 14 Makers Secure ID 36 maximum delayed motor start 23 maximum start current 23 mean time betw ee n fa ilur e. See[...]

66 Constellation SAS Pr oduc t Manual, Rev. E R radio interf erence reg ulations 3 Random num be r ge ne r at or 3 7 RCD bit 12 read erro r rates 14 , 39 read/write data heads 10 receivers 60 recommended m ounting 31 Recoverable Errors 14 recovered me d ia da ta 14 reference documents 5 relative humidity 29 reliability 8 specifications 14 reliabili[...]

Constellation SAS Produc t Manual, Rev. E 67 U unformatted 8 Unrecoverable Errors 14 unrecovered media data 14 V vibration 29 , 32 W warranty 20 Z zero latency read 55 zone bit recording (ZBR) 7[...]

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Seagate T echnology LLC 920 Disc Drive, Scotts V alley, California 95 066-4544, USA Publication Number: 1005386 93, Rev . E[...]