Seagate Cheetah 15K.6 SAS Product Manual Download Page 4

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Cheetah 15K.6 SAS Product Manual, Rev. A

6.4.1

Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.4.2

Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6.4.3

Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6.4.4

Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6.4.5

Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.4.6

Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.4.7

Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.4.8

Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

6.5

Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

7.0

Defect and error management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.1

Drive internal defects/errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.2

Drive error recovery procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.3

SAS system errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7.4

Background Media Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7.5

Media Pre-Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7.6

Deferred Auto-Reallocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7.7

Idle Read After Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

8.0

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8.1

Drive orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8.2

Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

8.3

Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

8.4

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.0

Interface requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

9.1

SAS features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.1.1

task management functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

9.1.2

task management responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

9.2

Dual port support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

9.3

SCSI commands supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
9.3.1

Inquiry data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

9.3.2

Mode Sense data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

9.4

Miscellaneous operating features and conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
9.4.1

SAS physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

9.4.2

Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

9.4.3

Connector requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

9.4.4

Electrical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

9.4.5

Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

9.4.6

SAS transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

9.4.7

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

9.5

Signal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
9.5.1

Ready LED Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

9.5.2

Differential signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

10.0

Seagate Technology support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Summary of Contents for Cheetah 15K.6 SAS

Page 1: ...Product Manual Cheetah 15K 6 SAS 100466193 Rev A October 2007 ST3450856SS ST3300656SS ST3146356SS...

Page 2: ...e United States and or other countries All other trademarks or registered trademarks are the property of their respective own ers One gigabyte or GB equals one billion bytes when referring to hard dri...

Page 3: ...ecution 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 Prefe...

Page 4: ...Read After Write 42 8 0 Installation 43 8 1 Drive orientation 43 8 2 Cooling 44 8 3 Drive mounting 45 8 4 Grounding 45 9 0 Interface requirements 47 9 1 SAS features 47 9 1 1 task management functions...

Page 5: ...rrent and power vs input output operations per second 31 Figure 8 Location of the HDA temperature check point 32 Figure 9 Recommended mounting 34 Figure 10 Physical dimensions 37 Figure 11 Physical in...

Page 6: ...2 Cheetah 15K 6 SAS Product Manual Rev A...

Page 7: ...SAS Serial Attached SCSI disk 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 general...

Page 8: ...2 Cheetah 15K 6 SAS Product Manual Rev A...

Page 9: ...osure 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 Department...

Page 10: ...has the Korean Ministry of Information and Communication MIC logo it complies with paragraph 1 of Article 11 of the Electromagnetic Compatibility EMC Control Regulation and meets the Electromagnetic...

Page 11: ...le ANSI SAS documents SFF 8323 3 5 Drive Form Factor with Serial Connector SFF 8460 HSS Backplane Design Guidelines SFF 8470 Multi Lane Copper Connector SFF 8482 SAS Plug Connector ANSI INCITS xxx Ser...

Page 12: ...6 Cheetah 15K 6 SAS Product Manual Rev A...

Page 13: ...d disk 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 disk assembly HDA is sealed at the factory Air recir...

Page 14: ...h of 320 bits No preventive maintenance or adjustments required Dedicated head landing zone Embedded servo design Automatic shipping lock Self diagnostics performed when power is applied to the drive...

Page 15: ...e total drive capacity to the value in the Number of Blocks field A value greater than the maximum number of LBAs is rounded down to the maximum capacity 3 7 Factory installed accessories OEM standard...

Page 16: ...10 Cheetah 15K 6 SAS Product Manual Rev A...

Page 17: ...on speed 15k 15k 15k RPM Avg rotational latency 2 0 2 0 2 0 msec One Gbyte equals one billion bytes when referring to hard drive capacity Accessible capacity may vary depending on operating environmen...

Page 18: ...the START bit equal to 1 the drive waits for a NOTIFY ENABLE SPINUP primitive After receiving a NOTIFY ENABLE SPINUP primitive through either port the drive becomes ready for normal operations within...

Page 19: ...as circular buffer segments during disk medium read operations disregarding Prefetch operation for the moment That is the drive does not check in the buffer segments for the requested read data but g...

Page 20: ...and after the data has been transferred into the cache but before the data has been written to the medium If an error occurs while writing the data to the medium and Good status has already been retur...

Page 21: ...detected and corrected by the drive and do not require user intervention Recoverable Data errors use retries and correction Application of ECC on the fly correction alone is not con sidered a Recover...

Page 22: ...tion 6 4 may increase the AFR decrease the MTBF AFR and MTBF statistics are population statistics that are not relevant to individual units AFR and MTBF specifications are based on the following assum...

Page 23: ...mal read and write operations When the PERF bit is set the drive is considered to be in On line Mode Only and will not perform off line functions You can measure off line attributes and force the driv...

Page 24: ...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...

Page 25: ...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...

Page 26: ...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...

Page 27: ...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...

Page 28: ...22 Cheetah 15K 6 SAS Product Manual Rev A...

Page 29: ...ed apply at the drive connector Table 2 ST3450856SS DC power requirements Notes ST3450856SS 1 5 Gbit mode ST3450856SS 3 Gbit mode Amps Amps Amps Amps Voltage 5V 12V 2 5V 12V 2 Regulation 5 5 5 2 5 5 2...

Page 30: ...ximum starting current peak DC DC 3 3 0 74 1 78 0 90 1 80 peak AC AC 3 3 0 86 4 00 1 14 4 31 Delayed motor start max DC 3 1 4 0 56 0 03 0 62 0 03 Peak operating current Typical DCX 1 6 0 60 1 05 0 63...

Page 31: ...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 consideration for individual drive power requirements sh...

Page 32: ...26 Cheetah 15K 6 SAS Product Manual Rev A Figure 2 Typical ST3450856SS current profiles...

Page 33: ...Cheetah 15K 6 SAS Product Manual Rev A 27 Figure 3 Typical ST3300656SS current profiles...

Page 34: ...28 Cheetah 15K 6 SAS Product Manual Rev A Figure 4 Typical ST3146356SS current profiles...

Page 35: ...tem on the horizontal axis and read the corresponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 5 ST3450856SS 3 Gbi...

Page 36: ...he horizontal axis and read the corresponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 6 ST3300656SS 3 Gbit DC cur...

Page 37: ...he horizontal axis and read the corresponding 5 volt current 12 volt current and total watts on the vertical axis To calculate BTUs per hour multiply watts by 3 4123 Figure 7 ST3146356SS 3 Gbit DC cur...

Page 38: ...AFR Provided the HDA case temperatures limits are met the drive meets all specifications over a 41 F to 131 F 5 C to 55 C drive ambient temperature range with a maximum temperature gradient of 36 F 2...

Page 39: ...normal operation shall operate error free while subjected to intermittent shock not exceeding 25 Gs at a maximum duration of 2 msec half sinewave Shock may be applied in the X Y or Z axis b Operating...

Page 40: ...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...

Page 41: ...ives and integrated drives The drive shall not incur physical damage or degraded performance as a result of continuous vibration not exceeding 5 500 Hz 3G Amplitudes above 1 0 G in the frequency range...

Page 42: ...ace of the printed circuit board assembly PCBA or exposed to an ambient relative humidity greater than 95 Materials used in cabinet fabrication such as vulca nized rubber that can outgas corrosive com...

Page 43: ...36 014 146 99 MAX 5 787 MAX 131 17 5 164 85 60 3 370 41 15 1 620 2X 29 21 2X 1 150 1 45 057 3 17 125 20 14 793 50 80 2 000 101 60 25 4 000 010 2X 100 13 2X 3 942 98 42 3 875 20 68 814 33 40 1 315 0 76...

Page 44: ...38 Cheetah 15K 6 SAS Product Manual Rev A...

Page 45: ...list is not altered after factory formatting Locations of defects found and reallocated during error recovery procedures after drive shipment are listed in the G list defects growth list The P and G l...

Page 46: ...ered error rate which may exceed the value given in this product manual A setting of zero 0 will result in the drive not performing error recovery For example suppose the read write recovery page has...

Page 47: ...the Start time after idle to 5ms all subsequent scans begin after 500ms of idle time Other features that normally use idle time to function will function normally because BMS functions for bursts of...

Page 48: ...a write command to rewrite the data DAR is most effective when AWRE and ARRE are enabled this is the default setting from the Seagate factory With AWRE and ARRE disabled DAR is unable to reallocate th...

Page 49: ...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...

Page 50: ...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...

Page 51: ...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...

Page 52: ...46 Cheetah 15K 6 SAS Product Manual Rev A...

Page 53: ...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...

Page 54: ...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...

Page 55: ...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...

Page 56: ...t Reconnect 02h Y Error Recovery page 01h Y Format page 03h Y Information Exceptions Control page 1Ch Y Background Scan mode subpage 01h Y Notch and Partition Page 0Ch N Protocol Specific Port page 19...

Page 57: ...Search Data Equal 31h N Search Data High 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...

Page 58: ...ally 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 available on special request FUA bit...

Page 59: ...re 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 an...

Page 60: ...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...

Page 61: ...00 00 00 00 00 00 00 00 00 00 00 00 DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 CHG 88 12 a5 00 00...

Page 62: ...00 00 00 00 00 00 00 00 00 00 00 00 00 DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 CHG 88 12 a5 00 0...

Page 63: ...0 00 00 00 00 00 00 00 00 00 00 00 00 DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00 CHG 88 12 a5 00 00...

Page 64: ...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...

Page 65: ...ice connector J1 Figures 14 and 15 provide the dimensions of the SAS device Details of the physical electrical and logical characteristics are provided within this section The operational aspects of S...

Page 66: ...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...

Page 67: ...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 14 and 15 6 10 Detail A 0 30 0 05...

Page 68: ...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...

Page 69: ...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...

Page 70: ...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...

Page 71: ...lk are taken into account 9 5 2 1 3 Jitter tolerance masks Figure 18 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...

Page 72: ...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...

Page 73: ...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...

Page 74: ...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...

Page 75: ...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...

Page 76: ...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...

Page 77: ...signal frequency in hertz The TCTF is used to specify the requirements on transmitters that may or may not incorporate pre emphasis or other forms of compensation A compliance interconnect is any phy...

Page 78: ...5 Gbps Figure 23 ISI loss example at 1 5 Gbps Tx Tx 10 nF 50 ohm 50 ohm Probe points SASinternal connector 10 nF ISIloss 3 9dB 10 9dB Frequency GHz Samplecom pliance interconnect 0 3 0 1 5 0 3 S21 dB...

Page 79: ...objective when the signal at a receiving 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...

Page 80: ...74 Cheetah 15K 6 SAS Product Manual Rev A...

Page 81: ...with product information program benefits and sales tools You may register for customized communications that are not available on the web These communications contain product launch EOL pricing prom...

Page 82: ...ilable on a global basis for the return of defective products Contact your customer support representative for the location nearest you USA Canada Latin America support services For an extensive list...

Page 83: ...ite data 14 Canadian Department of Communications 3 capacity unformatted 11 check condition status 58 chemical pollutants 36 class B limit 3 clear ACA function 47 clear task set function 47 commands s...

Page 84: ...al data rate 11 internal defects errors 39 internal drive characteristics 11 IRAW 42 J jumpers 43 L latency average rotational 11 12 logical block address 13 logical block reallocation scheme 8 logica...

Page 85: ...g 34 Recoverable Errors 15 recovered media data 15 reference documents 5 relative humidity 33 reliability 9 specifications 15 reliability and service 16 repair and return information 21 reporting actu...

Page 86: ...pported 05 47 Function reject 04 47 task set full status 58 technical support services 75 temperature 32 44 limits 32 non operating 32 regulation 3 See also cooling terminate task function 47 terminat...

Page 87: ......

Page 88: ...Seagate Technology LLC 920 Disc Drive Scotts Valley California 95066 4544 USA Publication Number 100466193 Rev A Printed in USA...

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