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Cheetah 15K.4 SAS Product Manual, Rev. B

7

3.0

General description

Cheetah drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood (PRML)
read channel electronics, embedded servo technology, and a Serial Attached SCSI (SAS) interface to provide
high performance, high capacity data storage for a variety of systems including engineering workstations, net-
work servers, mainframes, and supercomputers. The Serial Attached SCSI interface is designed to meet next-
generation computing demands for performance, scalability, flexibility and high-density storage requirements.

Cheetah drives are random access storage devices designed to support the Serial Attached SCSI Protocol as
described in the ANSI specifications, this document, and the SAS Interface Manual (part number 100293071)
which describes the general interface characteristics of this drive. Cheetah drives are classified as intelligent
peripherals and provide level 2 conformance (highest level) with the ANSI SCSI-1 standard. The SAS connec-
tors, cables and electrical interface are compatible with Serial ATA (SATA), giving future users the choice of
populating their systems with either SAS or SATA hard disc drives. This allows you to continue to leverage your
existing investment in SCSI while gaining a 3Gb/s serial data transfer rate.

The head and disc assembly (HDA) is sealed at the factory. Air recirculates within the HDA through a non-
replaceable filter to maintain a contamination-free HDA environment.

Note.

Never disassemble the HDA and do not attempt to service items in the sealed enclosure (heads,
media, actuator, etc.) as this requires special facilities. The drive does not contain user-replaceable
parts. Opening the HDA for any reason voids your warranty.

Cheetah drives use a dedicated landing zone at the innermost radius of the media to eliminate the possibility of
destroying or degrading data by landing in the data zone. The heads automatically go to the landing zone when
power is removed from the drive.

An automatic shipping lock prevents potential damage to the heads and discs that results from movement dur-
ing shipping and handling. The shipping lock disengages and the head load process begins when power is
applied to the drive.

Cheetah drives decode track 0 location data from the servo data embedded on each surface to eliminate
mechanical transducer adjustments and related reliability concerns.

The drives also use a high-performance actuator assembly with a low-inertia, balanced, patented, straight arm
design that provides excellent performance with minimal power dissipation.

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Содержание Cheetah 15K.4 SAS

Страница 1: ...Cheetah 15K 4 SAS ST3146854SS ST373454SS ST336754SS...

Страница 2: ......

Страница 3: ...Cheetah 15K 4 SAS ST3146854SS ST373454SS ST336754SS...

Страница 4: ...ls SeaFONE SeaBOARD SeaTDD and the Wave logo are either regis tered trademarks or trademarks of Seagate Technology LLC Other product names are regis tered trademarks or trademarks of their owners Seag...

Страница 5: ...Revision status summary sheet Revision Date Sheets Affected Rev A 11 22 04 All Rev B 05 04 05 Pages 11 37 58 and 59...

Страница 6: ......

Страница 7: ...time minutes 12 4 2 3 General performance characteristics 12 4 3 Start stop time 12 4 4 Prefetch multi segmented cache control 13 4 5 Cache operation 13 4 5 1 Caching write data 14 4 5 2 Prefetch ope...

Страница 8: ...Drive orientation 41 8 2 Cooling 42 8 3 Drive mounting 43 8 4 Grounding 43 9 0 Interface requirements 45 9 1 SAS features 45 9 1 1 task management functions 45 9 1 2 task management responses 45 9 2...

Страница 9: ...ns per second 32 Figure 11 ST373454SS 1 5 Gbit DC current and power vs input output operations per second 32 Figure 12 ST336754SS 3 Gbit DC current and power vs input output operations per second 33 F...

Страница 10: ...2 Cheetah 15K 4 SAS Product Manual Rev B...

Страница 11: ...tah SAS Serial Attached SCSI disc drives Cheetah drives support the SAS Protocol specifications to the extent described in this manual The SAS Inter face Manual part number 100293071 describes the gen...

Страница 12: ...2 Cheetah 15K 4 SAS Product Manual Rev B...

Страница 13: ...nclosure prior to use The drive is supplied as a subassembly and is not subject to Subpart B of Part 15 of the FCC Rules and Regulations nor the Radio Interference Regulations of the Canadian Departme...

Страница 14: ...requirements of the Electromagnetic Compatibility Directive 89 336 EEC of 03 May 1989 as amended by Directive 92 31 EEC of 28 April 1992 and Directive 93 68 EEC of 22 July 1993 Australian C Tick If th...

Страница 15: ...1562 D ISO IEC 14776 xxx SCSI Architecure Model 3 SAM 3 Standard T10 1561 D ISO IEC 14776 xxx SCSI Primary Commands 3 SPC 3 Standard T10 1416 D ISO IEC 14776 xxx SCSI Block Commands 2 SBC 2 Standard...

Страница 16: ...6 Cheetah 15K 4 SAS Product Manual Rev B...

Страница 17: ...This allows you to continue to leverage your existing investment in SCSI while gaining a 3Gb s serial data transfer rate The head and disc assembly HDA is sealed at the factory Air recirculates withi...

Страница 18: ...burst correction length of 320 bits No preventive maintenance or adjustments required Dedicated head landing zone Embedded servo design Automatic shipping lock Embedded servo design Self diagnostics p...

Страница 19: ...y formats out for zone frequencies and splits over servo bursts This added capacity potential may range from 0 1 to 1 3 percent above the guaranteed capacities listed above Using the drives in this ma...

Страница 20: ...ximum protection against transit damage Units shipped individually require additional protection as provided by the single unit shipping pack Users planning single unit distribution should specify thi...

Страница 21: ...ccessible Tracks per inch 85 000 85 000 85 000 TPI Peak bits per inch 628 628 628 KBPI Internal data rate 685 1 142 685 1 142 685 1 142 Mbits sec variable with zone Disc rotation speed 15k 15k 15k rpm...

Страница 22: ...After receiving a NOTIFY ENABLE SPINUP primitive through either port the drive becomes ready for normal operations within 20 seconds excluding the error recovery procedure ST3146854SS ST373454SS ST336...

Страница 23: ...is retrieved from the buffer if possible before any disc access is initiated If cache operation is not enabled the buffer still segmented with the required number of segments is still used but only as...

Страница 24: ...revious read or write command If there are the respective cache segments are cleared The new data is cached for subsequent Read commands If the number of write data logical blocks exceed the size of t...

Страница 25: ...ferent drive caching operations for optimal performance This means it is difficult to provide a single configuration that meets both of these needs In a desktop environment you want to configure the c...

Страница 26: ...16 Cheetah 15K 4 SAS Product Manual Rev B...

Страница 27: ...ate is determined using read bits transferred for recoverable errors occurring during a read and using write bits transferred for recoverable errors occurring during a write 5 1 2 Unrecoverable Errors...

Страница 28: ...mance Continual or sustained operation at case temperatures above the values shown in Section 6 4 1 may degrade product reliability Estimated power on operation hours means power up hours per disc dri...

Страница 29: ...s Control mode page 1Ch Use the DEXCPT bit to enable or disable the S M A R T feature Setting the DEX CPT bit disables all S M A R T functions When enabled S M A R T collects on line data as the drive...

Страница 30: ...s unacceptable To accom plish this a counter is incremented each time the error rate is unacceptable and decremented not to exceed zero whenever the error rate is acceptable If the counter continually...

Страница 31: ...uring either of these tests it reports a fault condition If the drive fails the test remove it from service and return it to Seagate for service 5 2 6 1 DST failure definition The drive will present a...

Страница 32: ...the short test is to provide a time limited test that tests as much of the drive as possible within 120 seconds The short test does not scan the entire media surface but does some fundamental tests an...

Страница 33: ...s and subassemblies that fails to function properly under normal use due to defect in materials or workmanship or due to nonconformance to the applica ble specifications will be repaired or replaced a...

Страница 34: ...24 Cheetah 15K 4 SAS Product Manual Rev B...

Страница 35: ...ed apply at the drive connector Table 2 ST3146854SS DC power requirements Notes ST3146854SS 3 Gbit mode ST3146854SS 1 5 Gbit mode Amps Amps Amps Amps Voltage 5V 12V 2 5V 12V 2 Regulation 5 5 5 2 5 5 2...

Страница 36: ...ge 5V 12V 2 5V 12V 2 Regulation 5 5 5 2 5 5 2 Avg idle current DCX 1 7 1 02 0 56 1 07 0 56 Maximum starting current peak DC DC 3 3 1 20 1 76 1 21 1 78 peak AC AC 3 3 1 62 3 79 1 56 3 87 Delayed motor...

Страница 37: ...not less than 1 7 of the maximum operating current shown 2 The 5V and 12V supplies should employ separate ground returns 3 Where power is provided to multiple drives from a common supply careful cons...

Страница 38: ...28 Cheetah 15K 4 SAS Product Manual Rev B Figure 2 Typical ST3146854SS drive 12V current profile Figure 3 Typical ST3146854SS drive 5V current profile...

Страница 39: ...Cheetah 15K 4 SAS Product Manual Rev B 29 Figure 4 Typical ST373454SS drive 12V current profile Figure 5 Typical ST373454SS drive 5V current profile...

Страница 40: ...30 Cheetah 15K 4 SAS Product Manual Rev B Figure 6 Typical ST336754SS drive 12V current profile Figure 7 Typical ST336754SS drive 5V current profile...

Страница 41: ...er for typical random read operations refer to the following I O rate curve see Figure 8 Locate the typical I O rate for a drive in your system on the horizontal axis and read the corresponding 5 volt...

Страница 42: ...typical random read operations refer to the following I O rate curve see Figure 8 Locate the typical I O rate for a drive in your system on the horizontal axis and read the corresponding 5 volt curre...

Страница 43: ...r typical random read operations refer to the following I O rate curve see Figure 8 Locate the typical I O rate for a drive in your system on the horizontal axis and read the corresponding 5 volt curr...

Страница 44: ...ratures are not exceeded Occasional excursions to drive ambient temperatures of 131 F 55 C or 41 F 5 C may occur without impact to specified AFR Air flow may be needed to achieve these temperatures Co...

Страница 45: ...ave The drive as installed for normal operation shall operate error free while subjected to intermittent shock not exceeding 65 Gs at a maximum duration of 2 msec half sinewave Shock may be applied in...

Страница 46: ...aged in single or multipacks with a gross weight of 20 pounds 8 95 kg or less by Seagate for general freight shipment shall withstand a drop test from 48 inches 1 070 mm against a concrete floor or eq...

Страница 47: ...to peak 22 500 Hz 2 00 G zero to peak Vibration may be applied in the X Y or Z axis Non operating translational random flat profile 10 400 Hz 1 2 GRMS 6 4 5 Air cleanliness The drive is designed to op...

Страница 48: ...physical dimensions See Section 8 3 Drive mounting Figure 16 Physical dimensions Height 1 000 in 25 4 mm Width 4 000 in 101 6 mm Depth 5 75 in 146 05 mm Weight 1 5 pounds 0 68 kilograms 26 11 MAX 1 02...

Страница 49: ...an error occurs during drive operation the drive if programmed to do so performs error recovery proce dures to attempt to recover the data The error recovery procedures used depend on the options pre...

Страница 50: ...trol of the time spent in error recovery The recovery time limit only starts counting when the drive is executing error recovery and it restarts on each command There fore each command s total recover...

Страница 51: ...e drive using high quality cables is acceptable as long as the I O cable length does not exceed 4 meters 13 1 feet Slide the carrier or tray into the appropriate bay in your host system using the inst...

Страница 52: ...he least amount of air flow resistance is created while providing air flow to the electronics and HDA Also the shortest possible path between the air inlet and exit should be chosen to minimize the tr...

Страница 53: ...our mounting points fixed and evaluating the out of plane deflection of the fourth mounting point when a known force F is applied to the fourth point 8 4 Grounding Signal ground PCBA and HDA ground ar...

Страница 54: ...44 Cheetah 15K 4 SAS Product Manual Rev B...

Страница 55: ...nt functions Table 6 lists the SAS task management functions supported 9 1 2 task management responses Table 7 lists the SAS response codes returned for task management functions supported Table 6 SAS...

Страница 56: ...eed negotiation it indicates the only sup ported speed is the speed selected by the first port If the first port to complete speed negotiation looses sync before the second port completes speed negoti...

Страница 57: ...pported Y IMMED bit supported Y VS vendor specific N Inquiry 12h Y Date Code page C1h Y Device Behavior page C3h Y Firmware Numbers page C0h Y Implemented Operating Def page 81h Y Jumper Settings page...

Страница 58: ...overy page 01h Y Format page 03h Y Information Exceptions Control page 1Ch Y Notch and Partition Page 0Ch N Protocol Specific Port page 19h Y Power Condition page 1Ah Y Rigid Disc Drive Geometry page...

Страница 59: ...30h N Search Data Low 32h N Seek 0Bh Y Seek Extended 2Bh Y Send Diagnostics 1Dh Y Supported Diagnostics pages 00h Y Translate page 40h Y Set Limits 33h N Start Unit Stop Unit spindle ceases rotating 1...

Страница 60: ...n firmware corruption This usually makes the drive inoperable 3 Reference Mode Sense command 1Ah for mode pages supported 4 Y Yes Command is supported N No Command is not supported A Support is availa...

Страница 61: ...ware stored in flash E PROM nonvolatile memory on the drive s PCB These default values can be changed only by downloading a complete set of new firmware into the flash E PROM An initiator can request...

Страница 62: ...n be changed A zero 0 indicates the value is not changeable For example in Table 9 3 2 1 refer to Mode page 81 in the row entitled CHG These are hex numbers representing the changeable values for Mode...

Страница 63: ...0 00 00 DEF Page 7 0x07 00 0B FF 00 00 00 00 00 FF FF CHG Page 7 0x07 0F FF 00 00 00 00 00 00 FF FF DEF Page 8 0x08 14 00 FF FF 00 00 FF FF FF FF 80 20 00 00 00 00 00 00 CHG Page 8 0x08 B5 00 00 00 FF...

Страница 64: ...0 00 00 DEF Page 7 0x07 00 0B FF 00 00 00 00 00 FF FF CHG Page 7 0x07 0F FF 00 00 00 00 00 00 FF FF DEF Page 8 0x08 14 00 FF FF 00 00 FF FF FF FF 80 20 00 00 00 00 00 00 CHG Page 8 0x08 B5 00 00 00 FF...

Страница 65: ...0 00 00 DEF Page 7 0x07 00 0B FF 00 00 00 00 00 FF FF CHG Page 7 0x07 0F FF 00 00 00 00 00 00 FF FF DEF Page 8 0x08 14 00 FF FF 00 00 FF FF FF FF 80 20 00 00 00 00 00 00 CHG Page 8 0x08 B5 00 00 00 FF...

Страница 66: ...n N Synchronized locked spindle operation Y Segmented caching N Zero latency read Y Queue tagging up to 64 queue tags supported Y Deferred error handling Y Parameter rounding controlled by Round bit i...

Страница 67: ...ce connector J1 Figures 20 and 21 provide the dimensions of the SAS device Details of the physical electrical and logical characteristics are provided within this section The operational aspects of Se...

Страница 68: ...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 DATU...

Страница 69: ...d in a future revision of this publication when production parts are available from major connec tor manufacturers The SAS device connector is illustrated in Figures 20 and 21 6 10 Detail A 0 30 0 05...

Страница 70: ...lugging NC No connection in the drive Pin Signal name Signal type Pin Signal name Signal type S1 Port A Ground P1 NC reserved 3 3Volts S2 Port A_in Diff input pair P2 NC reserved 3 3Volts S3 Port A_in...

Страница 71: ...urn current must be distributed as evenly as possible among the pins Current to the drive through the long power pins may be limited by the system to reduce inrush current to the drive during hot plug...

Страница 72: ...ics 9 5 2 1 Eye masks 9 5 2 1 1 Eye masks overview The eye masks are graphical representations of the voltage and time limits on the signal at the compliance point The time values between X1 and 1 X1...

Страница 73: ...lk are taken into account 9 5 2 1 3 Jitter tolerance masks Figure 24 describes the receive tolerance eye masks and is constructed using the X2 and Z2 values given in table 18 X1OP is half the value fo...

Страница 74: ...Z1OP X1OP and X2OP are the values in table 17 for Z1 X1 and X2 The X1 points in the receive tolerance masks are greater than the X1 points in the receive masks due to the addition of sinusoidal jitte...

Страница 75: ...he transition with a repeating 0101b pattern on the physical link The same stable trigger coherent to the data stream shall be used for both the Tx and Tx signals Skew is defined as the time differenc...

Страница 76: ...he same stable trigger coherent to the data stream shall be used for both the Rx and Rx signals Skew is defined as the time difference between the means of the midpoint crossing times of the Rx signal...

Страница 77: ...p c Sinusoidal swept frequency 900 kHz to 5 MHz d Sinusoidal swept frequency 1 800 kHz to 5 MHz e No value is given for random jitter For compliance with this standard the actual random jitter amplitu...

Страница 78: ...measurement applies only to the mated connector pair at each end as applicable d Where the media has an electrical length of 4 ns the procedure detailed in SFF 8410 or an equivalent procedure shall be...

Страница 79: ...equation for 3 0 Gbps for 50 MHz f 3 0 GHz and for 3 0 GHz f 5 0 GHz where a f is the signal frequency in hertz The TCTF is used to specify the requirements on transmitters that may or may not incorp...

Страница 80: ...gth test load Figure 28 shows an ISI loss example at 3 0 Gbps Figure 28 ISI loss example at 3 0 Gbps Tx Tx 10 nF 50 ohm 50 ohm Probe points SAS internal connector TCTF 10 nF Tx Tx 10 nF 50 ohm 50 ohm...

Страница 81: ...g phy has the addi tional sinusoidal jitter present that is specified in table 19 and the common mode signal VCM over frequency range FCM as specified in table 15 The jitter tolerance is shown in Figu...

Страница 82: ...72 Cheetah 15K 4 SAS Product Manual Rev B...

Страница 83: ...pricing promotions and other channel related information To learn more about the benefits or to register go to reseller seagate com any time from anywhere in the world Automated phone services SeaFON...

Страница 84: ...utside the US you can contact an Authorized Service Center for service USA Canada Latin America support services Seagate Service Centers Presales Support Call center Toll free Direct dial FAX Americas...

Страница 85: ...rance 00 800 47324283 00 800 47324289 Germany 00 800 47324283 00 800 47324289 Ireland 00 800 47324283 00 800 47324289 Italy 00 800 47324283 00 800 47324289 Netherlands 00 800 47324283 00 800 47324289...

Страница 86: ...ee Direct dial FAX Australia 1800 14 7201 China Mandarin 1 4 800 810 9668 86 10 6225 5336 Hong Kong 800 90 0474 Hong Kong Cantonese 1 4 001 800 0830 1730 India2 4 1 600 180 1104 Indonesia 001 803 1 00...

Страница 87: ...n feedback survey We are interested in your comments and suggestions regarding this publication Please take a few minutes to participate in our survey at the following URL http survey seagate com surv...

Страница 88: ...78 Cheetah 15K 4 SAS Product Manual Rev B...

Страница 89: ...14 caching write data 14 Canadian Department of Communications 3 capacity unformatted 11 case temperature 34 check condition status 56 chemical pollutants 37 class B limit 3 clear ACA function 45 clea...

Страница 90: ...e good status 56 internal data rate 11 internal defects errors 39 internal drive characteristics 11 J jumpers 41 L latency average rotational 11 12 logical block address 13 logical block reallocation...

Страница 91: ...che control 13 preventive maintenance 17 Q queue tagging 56 R radio interference regulations 3 RCD bit 13 read error rates 17 read write data heads 11 receivers 61 recommended mounting 36 Recoverable...

Страница 92: ...nate task 45 task management response codes 45 Function complete 00 45 Function not supported 05 45 Function reject 04 45 task set full status 56 technical support services 73 temperature 34 42 ambien...

Страница 93: ......

Страница 94: ...Seagate Technology LLC 920 Disc Drive Scotts Valley California 95066 4544 USA Publication Number 100350601 Rev B Printed in USA...

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