Instruction/ maintenance manual of the product ST373355SS Seagate
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Cheet ah T10 SAS ST3300555SS ST3146755SS ST373355SS.
©2006, Seagate T echnology LLC All rights rese rved Publication number: 10043369 4, A October 2006 Seagate , Seagate T echnology , and the Seagate logo are registe red trademarks of Seagate T echnology LLC. SeaT ools, SeaFONE, SeaBOARD, and SeaTDD are either registered tr ade - marks or trademar ks of Seagate T echnology LLC.
Cheetah T10 SAS Product Manual, Rev. A i Content s 1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Standards, compliance a nd reference documents .
ii Cheetah T10 SAS Product Manual, Rev. A 6.4.1 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6.4.2 Relative humidit y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cheetah T10 SAS Product Manual, Rev. A 1 List of Figures Figure 1. Cheetah T10 SAS disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Figure 2. Typical ST3300555SS drive current profiles .
2 Cheetah T1 0 SAS Product Manual, Rev. A.
Cheetah T10 SAS Product Manual, Rev. A 1 1.0 Scope This manual describes Seagate T echnology ® LLC, Cheetah ® SAS (Serial Attached SCSI) disc drives.
2 Cheetah T1 0 SAS Product Manual, Rev. A.
Cheetah T10 SAS Product Manual, Rev. A 3 2.0 S tandards, compliance and reference document s The drive has been developed as a syst em peripheral to the highest standa rds of design and construction.
4 Cheetah T1 0 SAS Product Manual, Rev. A 2.2 Compliance 2.2.1 Elec t romagnetic compliance Seagate uses an in dependent laborator y to confirm comp liance with the directives/standards for CE Marking and C-T ick Marking. The drive was tested in a r epresen t ative system for typical applications.
Cheetah T10 SAS Product Manual, Rev. A 5 2.3 Reference document s Cheetah T10 SAS Installation Guid e Seagate part nu mber: 100433695 SCSI Commands Reference Manual Seagate par t n u mber: 100293068 SAS Interface Manua l Seagate part nu mber: 100293071 Applicable ANSI SAS documents SFF-8323 3.
6 Cheetah T1 0 SAS Product Manual, Rev. A.
Cheetah T10 SAS Product Manual, Rev. A 7 3.0 General description Cheetah drives com bine giant magnetoresistive (GMR ) heads, p artial response/maximum likelihood (PRML) read channel electronics, embe.
8 Cheetah T1 0 SAS Product Manual, Rev. A 3.1 St andard features Cheetah drives hav e the following standard features : • 1.5 / 3 Gbit Serial Attached SCSI (SAS) interface • Integrated dual port S.
Cheetah T10 SAS Product Manual, Rev. A 9 3.4 Reliability • 1,400,000 hour MTBF (Ann ualized Failure Rate (AFR) of 0.62%) • Incorporat es industry-standar d Self-Monitor ing Analysis and Reporting T echnology (S.M.A.R.T .) • 5-year warranty 3.5 Formatted cap acities S tandard OEM models are formatted to 512 bytes pe r blo ck.
10 Cheetah T10 SAS Product Manual, Rev. A 3.8 Options (factory inst alled) Y ou may order the following items whic h are incorporated at th e manufacturing facility during production or packaged befo re shipping.
Cheetah T10 SAS Product Manual, Rev. A 11 4.0 Performance characteristics This section provides deta iled information concerning performance-related char acte r istics and fe atures o f Cheetah drives. 4.1 Internal drive characteristics ST3300555SS ST3146755SS ST3733 55SS Drive capacity 300.
12 Cheetah T10 SAS Product Manual, Rev. A 4.2.2 Format command exe cu ti on tim e (minutes) Execution time measured fr om receipt of the last byte of the Command Descriptor Block (CDB) to the request for a S tatus Byte T ransfer to the Init iator (ex cluding connec t/disconnect).
Cheetah T10 SAS Product Manual, Rev. A 13 The ST ART ST OP UNIT com mand may be u sed to command t he drive to stop th e spindle. S top time is 30 sec - onds (maximum) from removal of DC power .
14 Cheetah T10 SAS Product Manual, Rev. A 4.5.1 Cac hing write data Write caching is a wr ite 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 th e Write command.
Cheetah T10 SAS Product Manual, Rev. A 15 5.0 Reliability specifications The following reliability specifications assume correct host and drive operational interfac e, including all inter - face timings, power supply volt ages, environmental requirements and drive mou n tin g c on st ra ints.
16 Cheetah T10 SAS Product Manual, Rev. A 5.1.3 See k errors A seek error is defined as a failure of the drive to posi tion the heads to the addressed track. After detecting an initial seek error , the drive automatically performs an er ror recovery process.
Cheetah T10 SAS Product Manual, Rev. A 17 5.2.3 Hot plugging the drive When a disc is powere d on by switching the power or hot plugged, the drive runs a se lf test before atte mpting to communicate on its’ interfaces. Wh en the self test completes successfu lly , the drive initiates a Link Reset starting with OOB.
18 Cheetah T10 SAS Product Manual, Rev. A Reporting contro l Reporting is controlled by the MRIE bit s in the Informat ional Excep tions Control mode page (1Ch ). Subject to the reporting method, the firmware will issue to the host an 01-5Dxx sense code.
Cheetah T10 SAS Product Manual, Rev. A 19 be used to set this trip point. The default va lue for this drive is 6 8°C, howe ver , you can set it to any value in the range of 0 to 6 8°C. If you specify a temperature greater than 68°C in this field, the tempe rature is rounded down to 68°C.
20 Cheetah T10 SAS Product Manual, Rev. A 5.2.6.2. 1 St ate o f the drive p rior to test ing The drive must be in a read y state before issuing the Sen d Diagnostic comman d. There are multiple reasons why a drive m ay not be re ady , s ome of which are valid c onditions, and not errors.
Cheetah T10 SAS Product Manual, Rev. A 21 2. The Self-T est Results V alue field is set to Fh 3. The drive will store the log page to non-volatile memory After a self- test is complete or has been aborted , the driv e updates the Self-T est Result s V alue field in its Self- T est Results Log p age in non-volatile memory .
22 Cheetah T10 SAS Product Manual, Rev. A.
Cheetah T10 SAS Product Manual, Rev. A 23 6.0 Physical/electrical specifications This section provides information relating to the physical and electrical char acteristics of the drive. 6.1 AC power requirement s None. 6.2 DC power requirement s The volt age and current requireme nts for a single drive are shown below .
24 Cheetah T10 SAS Product Manual, Rev. A 0.15A DC and 0.2A AC 12V max st art current margin added.. 0.15A DC and 0.2A AC 12V max st art current margin added. [1] Measured with average reading DC ammeter or equivalent sampling scope. Inst antaneous +12V current peaks will exceed these values.
Cheetah T10 SAS Product Manual, Rev. A 25 Degrees C ambient . [2] For +12 V , a –10% tolerance is allowed durin g initial spindle st art but must return to ±5% before reaching 15,000 RPM.
26 Cheetah T10 SAS Product Manual, Rev. A Figure 2. T ypical ST33 0055 5SS drive current profile s.
Cheetah T10 SAS Product Manual, Rev. A 27 Figure 3. T ypical ST3146755SS drive current pr ofile s.
28 Cheetah T10 SAS Product Manual, Rev. A Figure 4. T ypical ST37 3355 SS drive current profiles.
Cheetah T10 SAS Product Manual, Rev. A 29 6.3 Power dissip ation ST3300555SS in 3 Gbit operation T ypical power dissip ation under idle conditions in 3Gb operation is 14.22 watt s (48.52 BTUs per hour). T o obtain ope r ating power for typical random read operatio ns, refer to the following I/O rate curve (see Figure 5 ).
30 Cheetah T10 SAS Product Manual, Rev. A ST3146755SS in 3 Gbit operation T ypical power dissip ation under idle conditions in 3Gb operation is 10.74 watt s (36.65 BTUs per hour). T o obtain ope r ating power for typical random read operatio ns, ref er to the following I/ O rate curv e (see Figur e 5 ).
Cheetah T10 SAS Product Manual, Rev. A 31 ST373355SS in 3 Gbit operation T ypical power dissipation under idle conditions in 3Gb operation is 9.13 watt s (31.15 BTUs per hour). T o obtain ope r ating power for typical random read operatio ns, refer to the following I/O rate curve (see Figure 5 ).
32 Cheetah T10 SAS Product Manual, Rev. A 6.4 Environment al limits T emperature and hum idity values experi enced by the driv e must be such that condens ation does not occur on any drive part. Altitude and atmospheric pressure specif icat ions are referenced to a st andard day at 58.
Cheetah T10 SAS Product Manual, Rev. A 33 6.4.2 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 .
34 Cheetah T10 SAS Product Manual, Rev. A d. Packaged Disc drives shipped as loose load (not palletized) general freight will be packaged to withs tand drop s from heights as define d in the table below . For additional det ails refer to Seagate specifications 30190-001 (under 100 lbs/45 kg) or 30191-00 1 (over 100 lbs/45 Kg).
Cheetah T10 SAS Product Manual, Rev. A 35 6.4.4.2 Vibration a. Operating—normal The drive as inst alled for normal operation, shall comply with the complete sp ecified performance while subjected to continuous vi bration not exceeding 10-500 Hz @ 0.
36 Cheetah T10 SAS Product Manual, Rev. A 6.4.7 Acou stics Sound power during idle mode shall be 3.6 bels typica l when measured to ISO 7779 specification. Sound power while operating shall be 4.3 bels typica l when measured to I S O 7779 specification.
Cheetah T10 SAS Product Manual, Rev. A 37 7.0 Defect and erro r management Seagate continues to use innova t ive technologies to manage defect s and errors. These technologies are designed to increase dat a integrity , perform drive self-mainten ance, and validat e proper drive operation.
38 Cheetah T10 SAS Product Manual, Rev. A The drive firmware er ror recovery algorithms consists of 1 1 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.
Cheetah T10 SAS Product Manual, Rev. A 39 7.3 SAS system errors Information on the reporting of operation al errors or faults a c ross the interface is given in the SAS Interface Manual . The SSP Response retur n s information to the host about numerous kinds of errors or faults.
40 Cheetah T10 SAS Product Manual, Rev. A 7.6 Deferred Auto-Reallocation Deferred Auto -Reallocati on (D AR) simplifies reallocation algorithms at the system level by allowing the drive to reallocate unreadable locations on a subsequent writ e command.
Cheetah T10 SAS Product Manual, Rev. A 41 8.0 Inst allation Cheetah disc drive installation is a plug- and-play proc ess. There ar e no jumpers, switches , or terminato rs 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 accomodate the drive.
42 Cheetah T10 SAS Product Manual, Rev. A 8.2 Cooling Cabinet cooling must be desig ned by the customer so that the a mbient temperat ure immediately surrounding the drive will not exceed temperat ure conditions specified in Section 6. 4. 1, "T emperature.
Cheetah T10 SAS Product Manual, Rev. A 43 8.3 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 stif f, non-flat surface.
44 Cheetah T10 SAS Product Manual, Rev. A.
Cheetah T10 SAS Product Manual, Rev. A 45 9.0 Interface requirements This section partially descr ibe s the inter face re quir em ent s as implemented on Cheet ah drives. Additional infor - mation is provided in the SAS Interface Manual (p art number 1 00293071).
46 Cheetah T10 SAS Product Manual, Rev. A 9.2 Dual port support Cheetah SAS drives have two independent port s. These ports may be connected in the same or di f ferent SCSI domains. Each drive port has a unique SAS address. The two port s run at the same link rate.
Cheetah T10 SAS Product Manual, Rev. A 47 9.3 SCSI commands supported Ta b l e 8 lists the SCSI commands sup ported by Cheetah d r ives. T able 8: Commands supported by Cheet ah T10 SAS family drives .
48 Cheetah T10 SAS Product Manual, Rev. A Non-medium Erro r page (06h) Y Pages Supported list (00h) Y Read Error Counter p age (03h) Y Read Reve rse Error Coun ter page (04h) N Self-test Results p age.
Cheetah T10 SAS Product Manual, Rev. A 49 Reassign Bl ocks 07h Y Receive Diagnostic Results 1Ch Y Supported Diagnostics p a ges (00h) Y T ranslate pa ge (40h) Y Release 17h Y Release (10) 57h Y Reques.
50 Cheetah T10 SAS Product Manual, Rev. A [1] Cheetah drives can format to 512, 520, 524, or 528 bytes per logical block. [2] W arning. Power loss during flash programm ing can result in firmware corrup tion. This usually makes the drive inoperable. [3] Reference Mode Se nse command 1Ah for mode pages suppo rted.
Cheetah T10 SAS Product Manual, Rev. A 51 9.3.1 Inquir y da ta Ta b l e 9 lists the Inquiry command data th at the drive should return to the initiator per the format given in the SAS Interfac e Manual . T able 9: Cheet ah T10 SAS inquiry data * Cop yright year (changes wi th actual year).
52 Cheetah T10 SAS Product Manual, Rev. A Select command before the dr ive a chieves op er ating speed a nd is “r eady .” An attempt to do so result s in a “Check Condition” status.
Cheetah T10 SAS Product Manual, Rev. A 53 T able 10: ST3300555SS Mode Sense dat a MODE DATA HEADER: 03 fa 00 10 00 00 00 08 BLOCK DESCRIPTOR: 22 ec b2 5c 00 00 02 00 MODE PAGES: DEF 81 0a c0 0b ff 00 .
54 Cheetah T10 SAS Product Manual, Rev. A T able 1 1: ST3146755SS Mode Sense dat a MODE DATA HEADER: 03 fa 00 10 00 00 00 08 BLOCK DESCRIPTOR: 11 17 73 30 00 00 02 00 MODE PAGES: DEF 81 0a c0 0b ff 00.
Cheetah T10 SAS Product Manual, Rev. A 55 T able 12: ST373355SS Mode Sens e dat a MODE DATA HEADER: 03 fa 00 10 00 00 00 08 BLOCK DESCRIPTOR: 08 8b b9 98 00 00 02 00 MODE PAGES: DEF 81 0a c0 0b ff 00 .
56 Cheetah T10 SAS Product Manual, Rev. A 9.4 Miscellaneous operating features and conditions Ta b l e 13 lists various features and conditions. A “Y” in the support column indica tes t he feature or condition is supported. An “N” in the support column indicates the feature or co ndition is not supported.
Cheetah T10 SAS Product Manual, Rev. A 57 9.4.1 SAS physical interfac e Figure 16 shows the location of the SAS device connecto r J1. Figures 17 and 18 provide th e dimen sions of the SAS device. Details of the physical, electrical, an d logical characteristics are provided wi th in this section.
58 Cheetah T10 SAS Product Manual, Rev. A 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.
Cheetah T10 SAS Product Manual, Rev. A 59 Figure 18. SAS connector dimensions 9.4.2 Physical characteristic s This section defines phys ical interface co nnector . 9.4.3 Connector requirement s Contact your preferred connector manufacturer for ma ti ng part informa tion.
60 Cheetah T10 SAS Product Manual, Rev. A 9.4.4 Electrical description SAS drives use the device connector for: • DC power • SAS interface • Activity LED This connector is des ign ed to eit he r plu g directly into a backpanel or accept cables. 9.
Cheetah T10 SAS Product Manual, Rev. A 61 9.4.6 SAS transmitters an d rece iv ers A typical SAS differential coppe r transmitter and receiver pa ir is shown in Figure 19 . The receiver is AC cou - pling to eliminate ground shif t noise . Figure 19. SAS tr ansmitters and receivers 9.
62 Cheetah T10 SAS Product Manual, Rev. A The Ready LED Out signal is designed to pu ll down t he cath ode of an LED. The anode is att ached to the proper +3. 3 volt su pply thro ugh an ap prop riat e cur ren t limitin g resist or . T he L ED an d th e cu rrent lim iting resis - tor are ext ernal to the d rive.
Cheetah T10 SAS Product Manual, Rev. A 63 9.5.2.1. 2 Receive ey e mask Figure 20 describes the r eceive eye mask. This eye mask applie s to jitter af ter the application of a single pole high-p a ss frequency-weighting function that prog ressively attenuates jitter at 20 dB/decade below a frequency of ((bit r ate) / 1.
64 Cheetah T10 SAS Product Manual, Rev. A The leading and tra iling edge slopes of figure 20 shall b e preserved. As a resu lt the amplitude value of Z1 is less than that given in tab le 20 and Z1 TOL.
Cheetah T10 SAS Product Manual, Rev. A 65 9.5.2.2 T ransmitter signa l characteristics T able 19 specifies the s ignal requ irements at the tra nsmi tter end of a TxRx connecti on as measured in to the zero-length test load. All specifications are base d on differential measu rements.
66 Cheetah T10 SAS Product Manual, Rev. A 9.5.2.3 Receiver si gn a l ch ara ct eri st ic s T able 20 defines the complia nce point requirem ents of the si gnal at the receiver en d of a TxRx connection as measured into th e test loads specified in figur e 23 and figure 24 .
Cheetah T10 SAS Product Manual, Rev. A 67 9.5.2.3.2 Receiver jitte r tole ra nc e T able 22 defines the amount of jitter the receiver shall toler a te . 9.5.2.3.3 Compliant jitter test p attern (CJTP A T) The CJTP A T within a compliant pr otocol frame is used for all jitter testing unless otherwise specified.
68 Cheetah T10 SAS Product Manual, Rev. A 9.5.2.4 Electrical TxRx conne ctions TxRx connec tions may be d ivided into TxRx connecti on segments. In a single TxRx connection individua l TxRx connection segment s may be formed from dif ferin g media and material s, including traces on printed wir - ing boards and optical fibers.
Cheetah T10 SAS Product Manual, Rev. A 69 A combination of a zero-leng th test load and the transm itter compliance transfer function (TCTF) test load methodology is used for the specificat ion of transmitter char acteristics. This methodology specifies the trans - mitter signal at the test points o n the required te st l oads.
70 Cheetah T10 SAS Product Manual, Rev. A 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 examp le at 3.0 Gbps Figure 26 shows an ISI loss example at 1.5 Gbps.
Cheetah T10 SAS Product Manual, Rev. A 71 9.5.2.5 Receiver char acteristics The drive receiver is A.C. coupled. The receive networ k ter minate s th e TxRx conne ction by a 1 00 ohm eq uiva - lent impedance as specified in table 23 .
72 Cheetah T10 SAS Product Manual, Rev. A.
Cheetah T10 SAS Product Manual, Rev. A 73 10.0 Seagate T echnolo gy support services Online services Internet www .seagate.com for information a bout Seagate p roducts an d services. Wor ldwide support is availab le 24 hours daily by e-mail for you r qu es tio ns.
74 Cheetah T10 SAS Product Manual, Rev. A Dat a Recovery Services Seagate offe rs data recover y services for all format s and all brands of storage media. Our Data Recovery Ser - vices labs are currently located in North America. T o speak with a case management represent ative, call 1-800-475-0143.
Cheetah T10 SAS Product Manual, Rev. A 75 European support services For presales and technical support in Euro pe, dial t he Seagate Service Center toll-free number for your spe - cific location. If your loc ation is no t listed here, dial our presales and technical sup port call center at +1-405- 324-4714 from 8:00 A .
76 Cheetah T10 SAS Product Manual, Rev. A Africa/Middle East support services For presales and tech nical support in Africa and the Mi ddle East, dial our presales an d technical support call center at +1-405- 324-4714 from 8:00 A . M . to 1 1:45 A . M .
Cheetah T10 SAS Product Manual, Rev. A 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 in.
78 Cheetah T10 SAS Product Manual, Rev. A environmen t 42 environmenta l limits 32 requirements 15 environmenta l control 35 error management 37 rates 15 errors 37 F FCC rules and regulations 3 featur.
Cheetah T10 SAS Product Manual, Rev. A 79 N noise audible 3 noise immunity 25 non-operating 33 , 35 temperature 32 non-operating vibration 35 O office enviro nment 35 operating 33 , 35 operating envir.
80 Cheetah T10 SAS Product Manual, Rev. A surface stiffness allowable for non- flat surface 43 switches 41 synchronized spindle operation 56 system chassis 43 T task management functions 45 Abort task.
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Seagate T echnology LLC 920 Disc Drive, Scotts V alley , California 95066-4544, USA Publication Number: 1004336 94, Rev . A, Printed in USA.
An important point after buying a device Seagate ST373355SS (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Seagate ST373355SS yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Seagate ST373355SS - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Seagate ST373355SS you will learn all the available features of the product, as well as information on its operation. The information that you get Seagate ST373355SS will certainly help you make a decision on the purchase.
If you already are a holder of Seagate ST373355SS, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Seagate ST373355SS.
However, one of the most important roles played by the user manual is to help in solving problems with Seagate ST373355SS. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Seagate ST373355SS along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
