Seagate ST9300453SS, ST9300653SS, ST9300553SS manual Start/stop time, Format command execution time

Page 20

5.2.2Format command execution time

 

ST9300653SS

ST9146853SS

 

ST9300553SS

ST9146753SS

 

ST9300453SS

ST9146653SS

Maximum (with verify)

57 minutes

29 minutes

Maximum (without verify)

29 minutes

15 minutes

Execution time measured from receipt of the last byte of the Command Descriptor Block (CDB) to the request for a Status Byte Transfer to the Initiator (excluding connect/disconnect).

When changing sector sizes, the format times shown above may need to be increased by 30 minutes.

5.2.3

General performance characteristics

 

Sustained transfer rate

144 to 193 MiB/s **

 

 

151 to 202 MB/s

SAS Interface maximum instantaneous transfer rate

600 MB/s* per port

 

 

(dual port = 1,200 MB/s*)

Logical block sizes

 

 

512 (default), 520, 524 and 528

 

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

2.0 ms

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

**MiB/s x 1.048 = MB/s

5.3Start/stop time

The drive accepts the commands listed in the SAS Interface Manual less than 3 seconds after DC power has been applied.

If the drive receives a NOTIFY (ENABLE SPINUP) primitive through either port and has not received a START STOP UNIT command with the START bit equal to 0, the drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure).

If the drive receives a START STOP UNIT command with the START bit equal to 0 before receiving a NOTIFY (ENABLE SPINUP) primitive, the drive waits for a START STOP UNIT command with the START bit equal to 1. After receiving a START STOP UNIT command with 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 30 seconds (excluding the error recovery procedure).

If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does not receive a NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT command.

The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 20 sec- onds (maximum) from removal of DC power. SCSI stop time is 20 seconds. There is no power control switch on the drive.

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Contents ST9300653SSST9300553SS ST9146853SSST9146753SS ST9300453SS ST9146653SSStandard Models Self-Encrypting Drive Models SED FIPS140-2 ModelsPage Contents Defect and error management InstallationAbout Fips About self-encrypting drives Interface requirementsPage Savvio 15K.3 SAS Product Manual, Rev. a List of Figures Page Seagate Technology support services Seagate Online Support and ServicesScope Applicable standards and reference documentation StandardsElectromagnetic compatibility Electromagnetic susceptibilityElectromagnetic compliance Electromagnetic compliance for the European UnionAustralian C-Tick Korean KCCEuropean Union Restriction of Hazardous Substances RoHS Scsi Commands Reference Manual SAS Interface Manual Reference documentsGeneral description Standard features Media descriptionFormatted capacities PerformanceReliability Factory installed options Programmable drive capacityPerformance characteristics Internal drive characteristicsSeek performance characteristics Access timeStart/stop time Format command execution timeGeneral performance characteristics Prefetch/multi-segmented cache control Cache operationCaching write data Prefetch operationReliability specifications Error ratesRecoverable Errors Unrecoverable ErrorsReliability and service Seek errorsInterface errors Preventive maintenanceMaximum processing delay 4 S.M.A.R.TControlling S.M.A.R.T Performance impactThermal monitor Temperature Log Page 0Dh Parameter Code DescriptionPredictive failures State of the drive prior to testing Drive Self Test DSTDST failure definition ImplementationShort and extended tests Short test Function Code 001bExtended test Function Code 010b Log page entriesProduct warranty ShippingProduct repair and return information StoragePowerChoice modes Physical/electrical specificationsPowerChoiceTM power management AC power requirements DC power requirements300GB models DC power requirements Regulation146GB models DC power requirements Conducted noise immunity General DC power requirement notesPower sequencing Current profiles Current profile for 300GB modelsCurrent profile for 146GB models 300GB models in 3Gb operation Power dissipation300GB models in 6Gb operation 146GB models in 6Gb operation 146GB models in 3Gb operationRelative humidity Temperature a. OperatingEnvironmental limits Shock Effective altitude sea level a. OperatingShock and vibration Vibration a. Operating-normal Recommended mountingAcoustics Air cleanlinessCorrosive environment Mechanical specifications DimensionsLevel 2 security About FipsPurpose Controlled access Admin SPAbout self-encrypting drives Data encryptionDefault password Random number generator RNGDrive locking Data bandsAuthenticated firmware download Power requirementsSupported commands Cryptographic eraseDrive error recovery procedures Defect and error managementDrive internal defects/errors SAS system errors Background Media ScanIdle Read After Write Media Pre-ScanDeferred Auto-Reallocation Setting and determining the current Type Level Protection Information PILevels of PI Identifying a Protection Information driveInstallation Drive orientationCooling Air flowDrive mounting GroundingSAS features Interface requirementsDual port support Scsi commands supportedSupported commands Supported commands Supported commands Supported commands Savvio inquiry data Mode Sense dataInquiry data Page Mode Data Header Mode Data Header Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features SAS physical interface Datum B Section C C Section a a Physical characteristics Connector requirementsElectrical description Pin descriptionsSignal characteristics PowerSAS transmitters and receivers Ready LED OutSAS-2 Specification compliance LED drive signalDifferential signals General interface characteristicsIndex NumericsPage Msid Mtbf See also cooling Page Savvio 15K.3 SAS Product Manual, Rev. a
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