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Seagate ST973402SS, ST9146802SS Format command execution time for 512-byte sectors minutes, 4.2.3

Models: ST973402SS ST9146802SS

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4.2.2Format command execution time for 512-byte sectors (minutes)

		ST9146802SS	ST973402SS
Maximum (with verify)		104		52
Maximum (without verify)		70		35
4.2.3	General performance characteristics
Minimum sector interleave				1 to 1
Data buffer to/from disc media (one 512-byte logical block)*				82 to 132 MBytes/sec
Sustained transfer rate				55 to 89 Mbytes/sec
SAS Interface maximum instantaneous transfer rate				300 Mbytes/sec* per port
				(dual port = 600 Mbytes/sec*)
Logical block sizes				Default is 512-byte data blocks
	Variable 512 to 528 bytes per sector in evenly divisible by 4 number of bytes per
	sector (512, 516, 520, 524, or 528). If n (number of bytes per sector is not divisi-
	ble by 4, the next lowest number that is devisible by 4 will be used.
Read/write consecutive sectors on a track				Yes
Flaw reallocation performance impact (for flaws reallocated at format time using the Negligible
spare sectors per sparing zone reallocation scheme.)
Average rotational latency				3.0 msec

*Assumes no errors and no relocated logical blocks. Rate measured from the start of the first logical block transfer to or from the host.

12	Savvio 10K.2 SAS Product Manual, Rev. B

Image 22

Seagate ST973402SS Format command execution time for 512-byte sectors minutes, 4.2.3, General performance characteristics

Contents

Savvio 10K.2 SAS ST9146802SS ST973402SSPage Savvio 10K.2 SAS ST9146802SS ST973402SSOctober 06/23/06 Revision status summary sheetRev. A Initial releasePage 5.0 Reliability specifications Contents4.0 Performance characteristics 6.0 Physical/electrical specifications10.0 Seagate Technology support services 7.0 Defect and error management8.0 Installation 9.0 Interface requirementsList of Figures Page 1.0 Scope Figure 1. Savvio 10K.2 SAS disc driveSavvio 10K.2 SAS Product Manual, Rev. B 2.1.1 Electromagnetic compatibility 2.0 Applicable standards and reference documentation2.1 Standards 2.1.1.1 Electromagnetic susceptibilityAustralian C-Tick 2.1.2 Electromagnetic complianceElectromagnetic compliance for the European Union Korean MICSCSI Commands Reference Manual 2.2 Reference documentsSavvio 10K.2 SAS Installation Guide Specification for Acoustic Test Requirement and ProceduresSavvio 10K.2 SAS Product Manual, Rev. B 3.0 General description 3.2 Media description 3.1 Standard features3.3 Performance 3.5 Formatted capacities 3.7 Factory-installed accessories3.4 Reliability 3.6 Programmable drive capacity3.8 Factory-installed options 4.2 Seek performance characteristics 4.0 Performance characteristics4.1 Internal drive characteristics 4.2.1 Access timeGeneral performance characteristics 4.2.2 Format command execution time for 512-byte sectors minutes4.2.3 4.4 Prefetch/multi-segmented cache control 4.3 Start/stop time4.5 Cache operation 4.5.1 Caching write data 4.5.2 Prefetch operationSavvio 10K.2 SAS Product Manual, Rev. B Savvio 10K.2 SAS Product Manual, Rev. B 5.1.1 Recoverable Errors 5.0 Reliability specifications5.1 Error rates 5.1.2 Unrecoverable Errors5.1.4 Interface errors 5.2 Reliability and service5.1.3 Seek errors 5.2.2 Preventive maintenanceControlling S.M.A.R.T Fully-enabled delay5.2.4 S.M.A.R.T Performance impactPredictive failures Reporting controlDetermining rate 5.2.5 Thermal monitorDescription Table 11 Temperature Log Page 0DhParameter Code 5.2.6 Drive Self Test DST5.2.6.2.3 Short and extended tests 5.2.6.2.1 State of the drive prior to testing5.2.6.2.2 Invoking DST Short test Function Code 001b5.2.6.2.5 Abort 5.2.7 Product warranty5.2.6.2.4 Log page entries ShippingProduct repair and return information Savvio 10K.2 SAS Product Manual, Rev. B6.2 DC power requirements 6.0 Physical/electrical specifications6.1 AC power requirements Table 12 ST9146802SS DC power requirementsTable 13 ST973402SS DC power requirements General DC power requirement notes6.2.3 Current profiles 6.2.2 Power sequencing6.2.1 Conducted noise immunity +12VFigure 3. ST973402SS current profile ST9146802SS in 3 Gbit operation 6.3 Power dissipationST973402SS in 3 Gbit operation 6.4 Environmental limits 6.4.1 Temperature6.4.4 Shock and vibration 6.4.2 Relative humidity6.4.3 Effective altitude sea level 6.4.4.1 ShockDrop height Packaged/product weightPackage size Figure 7. Recommended mounting6.4.4.2 Vibration 6.4.5 Air cleanliness6.4.6 Corrosive environment 6.4.7 Acoustics 6.4.8 Electromagnetic susceptibility6.5 Mechanical specifications Figure 8. Mounting configuration dimensionsSavvio 10K.2 SAS Product Manual, Rev. B 7.1 Drive internal defects/errors 7.0 Defect and error management7.2 Drive error recovery procedures Savvio 10K.2 SAS Product Manual, Rev. B Table 14 Read and write retry count maximum recovery times 7.3 SAS system errors7.4 Background Media Scan Maximum recovery time per7.6 Deferred Auto-Reallocation 7.5 Media Pre-Scan7.7 Idle Read After Write 8.0 Installation 8.1 Drive orientation8.2 Cooling Figure 10. Air flow8.3 Drive mounting 8.4 GroundingSavvio 10K.2 SAS Product Manual, Rev. B 9.1.1 task management functions 9.1 SAS features9.0 Interface requirements Table 15 SAS task management functions supported9.2 Dual port support 9.3 SCSI commands supported Table 17 Commands supported by Savvio SAS family driveTable 17 Commands supported by Savvio SAS family drive continued Table 17 Commands supported by Savvio SAS family drive continued Table 17 Commands supported by Savvio SAS family drive continued 9.3.2 Mode Sense data 9.3.1 Inquiry dataSavvio inquiry data Bytes4. Changeable values CHG = Changeable bits indicates if default value is changeable3. Current values Savvio 10K.2 SAS Product Manual, Rev. BMODE DATA HEADER 03 fa 00 10 00 00 00 BLOCK DESCRIPTOR Savvio 10K.2 SAS Product Manual, Rev. B Miscellaneous features 9.4 Miscellaneous operating features and conditionsMiscellaneous status 9.4.1 SAS physical interface Figure 11. Physical interfaceFigure 12. SAS device plug dimensions C OF DATUM B LFigure 13. SAS device plug dimensions detail 9.4.4 Electrical description 9.4.2 Physical characteristics9.4.3 Connector requirements 9.4.5 Pin descriptions9.4.6 SAS transmitters and receivers 9.5 Signal characteristics9.4.7 Power 9.5.1 Ready LED OutTable 26 General interface characteristics LED drive signal9.5.2 Differential signals Table 24 Ready LED Out conditionsFigure 15. Receive eye mask 9.5.2.1.2 Receive eye mask9.5.2.1.3 Jitter tolerance masks Figure 16. Reveive tolerance eye maskPeak-to X2OP - 0, 5xadditional sinusoidal jitter - X1OPtion sinusoidal9.5.2.2 Transmitter signal characteristics Table 27 Transmitter signal characteristics9.5.2.3.1 Jitter 9.5.2.3 Receiver signal characteristicsTable 28 Receiver signal characteristics Table 29 Maximum allowable jitterTable 30 Receiver jitter tolerance 9.5.2.3.4 Impedance specifications9.5.2.3.2 Receiver jitter tolerance 9.5.2.3.3 Compliant jitter test pattern CJTPATTable 31 Impedance requirements Sheet 2 of R0 RR9.5.2.4.1 Transmitter characteristics 9.5.2.4 Electrical TxRx connections= -5, 437dB = -10, 884dB10 nF SAS internal connectorTx+ TCTF Tx Probe9.5.2.5 Receiver characteristics Figure 21. ISI loss example at 1.5 GbpsSeagate Service Centers 10.0 Seagate Technology support servicesOnline services Customer Service OperationsData Recovery Services USA/Canada/Latin America support services Seagate Service CentersEuropean support services Authorized Service CentersFAX services-All Europe toll call Africa/Middle East support servicesAsia/Pacific support services Toll-free support numbersWarranty Service Seagate Service CentersCustomer Service Operations Call centerIndex NumericsPage Page See also cooling Page Seagate Technology LLC