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Product Manual Barracuda ® ES.2 SAS 100496298 Rev . G November 2010 ST31000640SS ST3750630SS ST3500620SS.
© 2010 Seagate T echnology LLC. All right s reserved. Publication number: 1004 96298, Rev . G, November 2010 Seagate, Seagate T echnolog y and the W ave logo are registered tradema rks of Seagate T echnology LLC in the United S tates an d/or other cou ntries.
Barracuda ES.2 SAS Product Ma nual, Rev. G (Draft 1) i Seagate Technology Suppor t Services iii 1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.
ii Barracuda ES.2 SAS Product Manual, Rev. G (Dr aft 1) 6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . .
Barracuda ES.2 SAS Product Manual , Rev. G (Draft 1) iii For information regarding on line support and services, visit http://www .sea gate.com/www/en-us/ about/contact_u s/ Available ser vices includ.
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Barracuda ES.2 SAS Prod uct Manual, Rev. G 1 1.0 Scope This manual describes Seagate T echno logy ® LLC, Barracuda ® ES.2 SAS (Serial Attached SCSI) disk drives. Barracuda ES.2 drives support the SAS Pr otocol specifications to the extent described in this manual.
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Barracuda ES.2 SAS Prod uct Manual, Rev. G 3 2.0 S t andards, 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 Barracuda ES.2 SAS Product Manual, Rev. G 2.2 Compliance 2.2.1 Elec tromagnetic compliance Seagate uses an in dependent laboratory to confirm comp liance with the directives/st andards for CE Marking and C-T ick Markin g. The drive was teste d in a repr esen t ative system for typical applications.
Barracuda ES.2 SAS Prod uct Manual, Rev. G 5 2.3 Reference document s SCSI Commands Reference Manual Seagate par t n umber: 100293068 SAS Interface Manua l Seagate part nu mber: 100293071 Applicable ANSI SAS documents SFF-8323 3.
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Barracuda ES.2 SAS Prod uct Manual, Rev. G 7 3.0 General description Barracuda ES.2 drives combine T unneling Magnetoresis tive (TMR) heads and a Serial Attached SCSI (SAS) interface to pr ovide high .
8 Barracuda ES.2 SAS Product Manual, Rev. G 3.1 St andard features Barracuda ES.2 SAS drives have the following st andard features: • Perpendicu lar recording technology • 1.
Barracuda ES.2 SAS Prod uct Manual, Rev. G 9 3.5 Formatted cap acities S tandard OEM models are for matted to 512 bytes pe r blo ck. The block size is select able at format time and must be a multiple of 4 bytes.
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Barracuda ES.2 SAS Produc t Manual, Rev. G 11 4.0 Performance characteristics This section provides detailed infor mation concerning perfor mance-related ch aracte ristics and features of Barracuda ES.
12 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 4.2.2 Format command ex ecu ti o n tim e (min u te s ) Execution time measured fr om receipt of the last byte of the Command Descri ptor Block (CDB) to the request for a S tatus Byte T ransfer to the Init iator (ex cluding connec t/disconnect).
Barracuda ES.2 SAS Produc t Manual, Rev. G 13 4.4 Prefetch/multi-segmented cache control The drive provides a prefetch (read look-ahead) and mu lti-segmented cach e control algorithms that in many cases can enhance system performance. Cache refers to the drive buf fer storage sp ace when it is used in cache operations.
14 Barracuda ES.2 SAS Pr oduct Manual, Rev. G If read caching is en abled (RCD=0), then data written to t he medium is ret ained in the cache to be made avail- able for fu ture read cache hit s. The same buf fer sp ace and segment ation is used as set up for read functions.
Barracuda ES.2 SAS Produc t Manual, Rev. G 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, environmenta l requirem en ts and drive mou n tin g con st ra i nts.
16 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 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 dete cting an initial seek error , the drive automatically perfor ms an er ror recovery process.
Barracuda ES.2 SAS Produc t Manual, Rev. G 17 5.2.4 S.M.A.R.T . S.M.A.R.T . is an acronym for Self-Monitoring Analysis and Re porting T e chnology . This technology is intended to recognize conditions.
18 Barracuda ES.2 SAS Pr oduct Manual, Rev. G Error rate is the number of er rors per operation . The algori thm that S.M.A.R.T . uses to record rates of error is to set thresholds for the number of errors and their interval .
Barracuda ES.2 SAS Produc t Manual, Rev. G 19 The most thorough op tion is the extended test that per f orms various tes ts on the driv e a nd sca n s ev er y lo gic al block address (LBA) of the drive.
20 Barracuda ES.2 SAS Pr oduct Manual, Rev. G Each test consists of three segment s: an electrical te st segment, a ser vo te st seg men t, an d a read /ver ify scan segment. Short test (Function Code: 001b) The purpose of the sh ort test is to pr ovide a time-limited test that tests a s much of the drive as possible within 120 seconds.
Barracuda ES.2 SAS Produc t Manual, Rev. G 21 procedure. Seagate will pay for transpo rting the repair or replacement item to the customer . For more detailed warranty information, refer to the st andard terms and conditions of purchase for Seagate products on your pur- chase docume n tation.
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Barracuda ES.2 SAS Produc t Manual, Rev. G 23 6.0 Physical/electrical specifications This section provides information relating to the physical and electrical char acter istics of the drive. 6.1 AC power requirement s None. 6.2 DC power requirement s The volt age and current requirement s for a single drive are shown be low .
24 Barracuda ES.2 SAS Pr oduct Manual, Rev. G [1] Measured with average reading DC ammeter or equivalent sampling scope. Inst anta neous +12V current peaks will exceed these values. Power supply at nominal volt a ge. N (number of driv es tested) = 6, 35 Degrees C ambient .
Barracuda ES.2 SAS Produc t Manual, Rev. G 25 [4] This condition occurs after OOB and S peed Negotiat ion co mpletes but befo re the drive has receive d the Notify S pinup primitive. [5] See paragrap h 6.2.1, "Cond ucted noise immunity ." S pecified voltag e tolerance includes ripple, noise, and transient response.
26 Barracuda ES.2 SAS Pr oduct Manual, Rev. G Figure 2. T ypical ST31 0006 40SS driv e +5V and +1 2V current profiles Figure 3. T ypical ST375063 0SS driv e +5V and +12V cu rrent profiles.
Barracuda ES.2 SAS Produc t Manual, Rev. G 27 Figure 4. T y pical ST3500620SS drive +5V and +12V current profiles 6.3 Power dissip ation T ypical power dissipation under idle conditions in 3Gb operation is 8.
28 Barracuda ES.2 SAS Pr oduct Manual, Rev. G Figure 5. ST31000640SS (3 Gbit) DC cu rrent an d power vs. inp ut/output operations pe r second Figure 6. ST3750630SS (3 Gbit) DC curren t and power vs. input/output operations per seco nd Figure 7. ST3500620SS (3 Gbit) DC curren t and power vs.
Barracuda ES.2 SAS Produc t Manual, Rev. G 29 6.4 Environment al limit s T emperature and humidity values exper ienced by the driv e must be such that condens ation does not occur on any drive part. Altitude and atmospheric pressure specif ications are referen ced to a standard day at 58.
30 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 6.4.2 Relative humidity The values below assume that no condensation on the drive occu rs. a. Operating 5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour . b. Non-operatin g 5% to 95% non-condensing relative humidity .
Barracuda ES.2 SAS Produc t Manual, Rev. G 31 d. Packaged Disk 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 3019 0-001 (under 100 lbs/45 kg) or 30191-001 (o ver 100 lbs/45 Kg).
32 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 6.4.4.2 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.
Barracuda ES.2 SAS Produc t Manual, Rev. G 33 exposed to an ambient re lative humidity g reater than 95%. Materials used in cabinet fabrication, such as vulca- nized rubber , that can outgas corrosive compounds should be minimized or eliminat ed.
34 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 6.5 Mechanical specifications Refer to Figure 9 for det ailed physical dim ensions. See Sec tio n 8.3 , “Dr ive mo un ting. ” Figure 9. Physical d imensions Height: 1.028 inches 26.1 1 mm Width: 4.010 inches 101.
Barracuda ES.2 SAS Produc t Manual, Rev. G 35 7.0 Defect and erro r management Seagate continues to use innova tive technologies to manage defect s and errors. These techno logies are designed to increase dat a integrity , perform drive self-maintenance, an d validat e proper drive opera tio n.
36 Barracuda ES.2 SAS Pr oduct Manual, Rev. G The drive firmware er ror recovery algorithms consist s 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.
Barracuda ES.2 SAS Produc t Manual, Rev. G 37 7.3 SAS system errors Information on the reporting of operational errors or fault s across the interface is given in the SAS Interface Manual . The SSP Response returns info rmation to the host about num erous kinds of errors or faults .
38 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 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 comma nd.
Barracuda ES.2 SAS Produc t Manual, Rev. G 39 8.0 Inst allation Barracuda ES.2 disk drive inst allation is a plug -and-play process. Ther e are no jumpers, switches, or te rmina- tors 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.
40 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 8.2 Cooling The host enclosure must dissipate he at from the dr ive . Y ou sh ou ld co nf irm that the host encl osure is designed to ensure that the drive op erates within the temp eratur e measurement guideline s described in Section 6.
Barracuda ES.2 SAS Produc t Manual, Rev. G 41 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 stiff, non-flat surface.
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Barracuda ES.2 SAS Produc t Manual, Rev. G 43 9.0 Interface requirements This section partially describes th e interface requir ements as implemented on Barr acuda ES.2 drives. Addi - tional information is provided in the SAS Interface Manual (p art number 10 0293071).
44 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 9.2 Dual port support Barracuda ES.2 SAS drives have two in dependent ports. These port s may be connected in the same or differ- ent SCSI domains. Each drive port has a uni que SAS address. The two port s run at the same link rate.
Barracuda ES.2 SAS Produc t Manual, Rev. G 45 9.3 SCSI commands supported T able 8 lists the SCSI command s sup ported by Barracuda ES.2 drives. T able 8: Commands supported by Barrac uda ES.
46 Barracuda ES.2 SAS Pr oduct Manual, Rev. G Non-medium Error p age (06h) Y Pages Supported list (00h) Y Read Error Counter page (03h) Y Read Reve rse Error Coun ter page (04h) N Self-test Results pa.
Barracuda ES.2 SAS Produc t Manual, Rev. G 47 Reassign Bl ocks 07h Y Receive Diagnostic Results 1Ch Y Supported Diagnostics pages (00h) Y T ranslate page (40h) Y Release 17h Y Release (10) 57h Y Reque.
48 Barracuda ES.2 SAS Pr oduct Manual, Rev. G [1] Barracuda ES.2 drives can format to 51 2, 520, 524, or 528 bytes per logical block. [2] Wa r n i n g . Power loss during flash prog ramming can result in firmware corr uption. This usually makes the drive inoperable.
Barracuda ES.2 SAS Produc t Manual, Rev. G 49 9.3.1 Inquir y da ta T able 9 lists the Inquiry command dat a that the drive sho uld return to the initia tor per the format given in the SAS Interfac e Manual . T able 9: Barracuda ES.2 SAS inquiry dat a * Copyright year (change s with actual year).
50 Barracuda ES.2 SAS Pr oduct Manual, Rev. G On standard OEM drives, the saved values are taken from the defau lt values list and stored into the saved values storage location on the media prior to shipping. 3. Current valu es Current values are volatile values being used by the drive to control it s operation.
Barracuda ES.2 SAS Produc t Manual, Rev. G 51 9.3.2.1 ST3100064 0SS Mode Sen se data MODE DATA HEADER: 01 2e 00 10 00 00 00 08 BLOCK DESCRIPTOR: 74 70 6d b0 00 00 02 00 MODE PAGES: DEF 81 0a c0 0b ff .
52 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 9.3.2.2 ST3750630SS Mode Sense da ta MODE DATA HEADER: 01 2e 00 10 00 00 00 08 BLOCK DESCRIPTOR: 57 54 66 f0 00 00 02 00 MODE PAGES: DEF 81 0a c0 0b ff 00.
Barracuda ES.2 SAS Produc t Manual, Rev. G 53 9.3.2.3 ST3500620SS Mode Sense da ta MODE DATA HEADER: 01 2e 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.
54 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 9.4 Miscellaneous operating features and conditions T able 10 lists various fe atures and conditions. A “Y” in th e support column indicates t he featur e or condition is supported. An “N” in the support column indicates the feat ure or condition is not supported.
Barracuda ES.2 SAS Produc t Manual, Rev. G 55 9.4.1 SAS p hysical interface Figure 12 shows the location of the SAS device c onnector J1. Figures 13 and 14 provide the dimensions of the SAS device. Details of the physical, electrical, an d logical characteristics ar e provided wi thin this section.
56 Barracuda ES.2 SAS Pr oduct Manual, Rev. G Figure 13. SAS connector d imensions 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.
Barracuda ES.2 SAS Produc t Manual, Rev. G 57 Figure 14. SAS connector d imensions 9.4.2 Phy sical characteristics This section defines phys ical interface co nnector . 9.4.3 Conn ector requirement s Contact you r preferred connecto r manuf acturer for mating part in formation.
58 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 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.
Barracuda ES.2 SAS Produc t Manual, Rev. G 59 9.4.6 SAS transmitters an d rece iv ers A typical SAS differential copper transm itter and receiver p air is shown in Figure 15. The rece iver is AC cou- pling to eliminate ground shif t noise. Figure 15. SAS transmitters and rec eivers 9.
60 Barracuda ES.2 SAS Pr oduct Manual, Rev. G The Ready LED Out signal is designed to pu ll down t he cathode of an LED. The anode is attache d to the proper +3. 3 volt su pply thro ugh an ap prop riat e cur ren t limitin g resist or . The LED and th e cu rren t limitin g resis - tor are ext ernal to the d rive.
Barracuda ES.2 SAS Produc t Manual, Rev. G 61 9.5.2.1. 2 Receive ey e mask Figure 16 describes the receive eye mask. This eye m ask applies to jitter after the application of a single pol e high-p ass frequency-weighting function th at progressively attenuates jitter at 20 d B/decade below a frequency of ((bit r ate) / 1.
62 Barracuda ES.2 SAS Pr oduct Manual, Rev. G The leading and trailing edge sl opes of figure 16 shall be preserved. As a result th e amplitude value of Z1 is less than that given in t able 17 and Z1 .
Barracuda ES.2 SAS Produc t Manual, Rev. G 63 9.5.2.2 T ransmitter signal characte ristics T able 16 specifies the s ignal requir ements at the tra n smitter end of a TxRx connec tio n as measured into the zero-length test load. All specifications are base d on diff er ential measurement s.
64 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 9.5.2.3 Receiver si gn a l ch ara ct eri st ic s T able 17 defines the compliance point requireme nts of the signa l at the receiver end of a TxRx connection as measured into the test loads specified in fig ure 19 and figure 20.
Barracuda ES.2 SAS Produc t Manual, Rev. G 65 9.5.2.3.2 Receiver jitte r tole ra nc e T able 19 defines the amount of jitter the r eceiver shall tolerate. 9.5.2.3.3 Compliant jitter test p attern (CJTP A T) The CJTP A T within a compliant protocol frame is used for all jitter testing unless ot herwise specified.
66 Barracuda ES.2 SAS Pr oduct Manual, Rev. G 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 in dividual TxRx connection segment s may be formed from dif fering media and materi als, in cludin g traces on print ed wir- ing boards and optical fibers.
Barracuda ES.2 SAS Produc t Manual, Rev. G 67 A combination of a zero-leng th test load and the tr ansm itter compli ance transfer function (TCTF) test load methodology is used for the specificat ion of transmitter ch aracteristics. This methodology specifies the trans- mitter signal at the test point s on the r equired test lo ads.
68 Barracuda ES.2 SAS Pr oduct Manual, Rev. G Figure 20 shows the zero-length test load . Figure 20. Zero-length test l oad Figure 21 shows an ISI loss example at 3.0 Gbps. Figure 21. ISI loss example at 3.0 Gbp s Figure 22 shows an ISI loss example at 1.
Barracuda ES.2 SAS Produc t Manual, Rev. G 69 9.5.2.5 Receiver char acteristics The drive receiver is A.C. coupled. The receive networ k termina tes th e TxRx con ne ction by a 1 00 ohm eq uiva- lent impedance as specified in table 20.
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Seagate T echnology LLC 920 Disc Drive, Scotts V alley, California 95066 -4544, USA Publication Number: 1004 96298, Rev . G.
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