Seagate ST9600204SS manual Physical/electrical specifications, PowerChoiceTM power management

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6.0Physical/electrical specifications

This section provides information relating to the physical and electrical characteristics of the drive.

6.1PowerChoiceTM power management

Drives using the load/unload architecture provide programmable power management to tailor systems for per- formance and greater energy efficiency.

The table below lists the supported PowerChoice modes. The further you go down in the table, the more power savings you get. For example, Idle_B mode results in greater power savings than Idle_A mode. Standby modes results in the greatest power savings.

PowerChoice modes

Mode	Description

Idle_A	Reduced electronics

Idle_B	Heads unloaded. Disks spinning at full RPM

Idle_C	Heads unloaded. Disks spinning at reduced RPM

Standby_Y	Heads unloaded. Disks spinning at reduced RPM.
	Recovery requires the NOTIFY (Enable Spinup) primitive.

Standby_Z	Heads unloaded. Motor stopped (disks not spinning)
	Recovery requires the NOTIFY (Enable Spinup) primitive.

PowerChoiceTM can be invoked using one of these two methods:

•Power Condition mode page method—Enable and initialize the idle condition timers and/or the standby con- dition timers. The timer values are based on the values set in the Power Condition mode page.

•START STOP UNIT command method—Use the START STOP UNIT command (OPERATION CODE 1Bh). This allows the host to directly transition the drive to any supported PowerChoice mode.

If both the Power Condition mode page and START STOP UNIT command methods are used, the START STOP UNIT command request takes precedence over the Power Condition mode page power control and may disable the idle condition and standby condition timers. The REQUEST SENSE command reports the current PowerChoice state if active and also the method by which the drive entered the PowerChoice state.

When the drive receives a command, all power condition timers are suspended if they were enabled via the Power Condition mode page. Once all outstanding commands are processed, the power condition timers are reinitialized to the values defined in the Power Condition mode page.

20	Savvio 10K.4 SAS Product Manual, Rev. A

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Contents ST9600204SSST9600104SS ST9450404SSST9450304SS Standard Models Self-Encrypting Drive ModelsRevision history Rev. a 12/15/09 Initial releaseContents Defect and error management InstallationAbout self-encrypting drives Interface requirementsSeagate Technology support services Savvio 10K.4 SAS Product Manual, Rev. a List of Figures Page Scope Applicable standards and reference documentation StandardsElectromagnetic compatibility Electromagnetic susceptibilityElectromagnetic compliance Electromagnetic compliance for the European UnionAustralian C-Tick Korean KCCReference documents European Union Restriction of Hazardous Substances RoHSGeneral description Standard features Media descriptionPerformance ReliabilityFormatted capacities Programmable drive capacityFactory-installed options Performance characteristics Internal drive characteristicsSeek performance characteristics Access timeGeneral performance characteristics Start/stop timeCache operation Prefetch/multi-segmented cache controlCaching write data Prefetch operation Reliability specifications Error ratesRecoverable Errors Unrecoverable ErrorsReliability and service Seek errorsInterface errors Preventive maintenanceMaximum processing delay Fully-enabled delay 4 S.M.A.R.TControlling S.M.A.R.T Performance impactPredictive failures Temperature Log Page 0Dh Parameter Code DescriptionThermal monitor 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 entriesShipping Product warrantyProduct repair and return information PowerChoiceTM power management Physical/electrical specificationsPowerChoice modes AC power requirements DC power requirementsSavvio 10K.4 SAS Product Manual, Rev. a Page Page Power sequencing General DC power requirement notesConducted noise immunity Current profiles Current profiles for 600GB modelsCurrent profiles for 450GB models Power dissipation GB models in 3Gb operation600GB models in 6Gb operation 450GB models in 3Gb operation Environmental limits Temperature a. Operating450GB models in 6Gb operation Effective altitude sea level a. Operating Relative humidityShock and vibration Shock Recommended mounting Vibration a. Operating-normal Air cleanlinessCorrosive environment Acoustics Mechanical specifications Mounting configuration dimensionsControlled access Admin SPAbout self-encrypting drives Data encryptionDefault password Random number generator RNGDrive locking Data bandsAuthenticated firmware download Power requirementsSupported commands Cryptographic eraseDrive internal defects/errors Defect and error managementDrive error recovery procedures SAS system errors Media Pre-Scan Background Media ScanDeferred Auto-Reallocation Idle Read After Write Installation Drive orientationCooling Air flowDrive mounting GroundingSAS features Interface requirementsDual port support Scsi commands supported Supported commandsSupported commands Supported commands Supported commands Inquiry data Mode Sense dataSavvio inquiry data Page Mode Sense data for ST9600204SS and ST9600104SS drives Mode PagesMode Sense values for ST9450404SS and ST9450304SS drives Miscellaneous features Miscellaneous operating features and conditionsMiscellaneous status 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 characteristicsSeagate Technology support services InternetPresales Support Technical SupportData Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dialFAX Index NumericsKCC Msid Mtbf See also cooling Page Savvio 10K.4 SAS Product Manual, Rev. a Page Seagate Technology LLC

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