Seagate ST31000533CS manual Power-management modes, Active mode, Idle mode, Sleep mode

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2.7.4Power-management modes

The drive provides programmable power management to provide greater energy efficiency. In most systems, you can control power management through the system setup program. The drive features the following power-management modes:

Power modes

Heads

Spindle

Buffer

 

 

 

 

Active

Tracking

Rotating

Enabled

 

 

 

 

Idle

Tracking

Rotating

Enabled

 

 

 

 

Standby

Parked

Stopped

Enabled

 

 

 

 

Sleep

Parked

Stopped

Disabled

 

 

 

 

•Active mode

The drive is in Active mode during the read/write and seek operations.

• Idle mode

The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc access is necessary.

•Standby mode

The drive enters Standby mode when the host sends a Standby Immediate command. If the host has set the standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for a specifiable length of time. The standby timer delay is established using a Standby or Idle command. In Standby mode, the drive buffer is enabled, the heads are parked and the spindle is at rest. The drive accepts all commands and returns to Active mode any time disc access is necessary.

• Sleep mode

The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive buffer is disabled, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it receives a Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and enters Standby mode with all current translation parameters intact.

• Idle and Standby timers

Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and begins counting down from its specified delay times to zero. If the standby timer reaches zero before any drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the drive accepts all commands and returns to Active mode when disc access is necessary.

Pipeline HD Pro Serial ATA Product Manual, Rev. C

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Contents ST31000533CS Pipeline HD Pro Serial ATARevision Date Sheets affected or comments Revision historyContents Pipeline HD Pro Serial ATA Product Manual, Rev. C List of Figures Page Introduction About the Serial ATA interface Drive specifications Drive specifications summary for 1000 Gbyte models Will display the warranty information for your drive Recording and interface technology Default logical geometryLBA mode Formatted capacityTypical seek times msec Read Write Physical characteristicsSeek time Start/stop timesPower specifications Sleep mode Power-management modesActive mode Idle modeEnvironmental specifications Nonoperating vibration Nonoperating shock GB modelsVibration Operating vibrationTest for Prominent Discrete Tones PDTs AcousticsElectromagnetic immunity Fluid Dynamic Bearing FDB motor acousticsElectromagnetic compatibility Safety certificationReliability Agency certificationKorean RRL Australian C-Tick N176FCC verification Corrosive environment Environmental protectionPipeline HD Pro Serial ATA Product Manual, Rev. C Handling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensions 1000 GB modelsPipeline HD Pro Serial ATA Product Manual, Rev. C Hot-Plug compatibility Serial ATA Sata interfacePin Function Definition Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions SignalSupported ATA commands Supported ATA commandsCommand name Command code in hex F4H Word Description Value Identify Device commandXx07H Bit Word Description if bit is set to Bit WordWord Set Features command values Set Features command3 S.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command Seagate Technology support services Presales SupportTechnical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index ITE Page Pipeline HD Pro Serial ATA Product Manual, Rev. C Page Disc Drive, Scotts Valley, California 95066-4544, USA
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