Seagate ST980813ASG manual Power-management modes, Power management modes, Active mode, Idle mode

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2.9.4Power-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:

Table 4:

Power management modes

 

 

 

 

 

 

 

Power modes

Heads

 

Spindle

Buffer

 

 

 

 

 

Active (operating)

Tracking

 

Rotating

Full Power

 

 

 

 

 

Idle, performance

Tracking

 

Rotating

Self Refresh Low Power

 

 

 

 

 

 

Idle, active

 

Floating

 

Rotating

Self Refresh Low Power

 

 

 

 

 

Idle, low power

Parked

 

Rotating

Self Refresh Low Power

 

 

 

 

 

 

Standby

 

Parked

 

Stopped

Self Refresh Low Power

 

 

 

 

 

 

Sleep

 

Parked

 

Stopped

Self Refresh Low Power

 

 

 

 

 

 

•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 in Self Refresh Low Power mode, 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 in Self Refresh Low Power mode, 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.

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Momentus 7200.2 SATA Product Manual, Rev. E

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Contents Momentus 7200.2 Sata Page Contents Momentus 7200.2 Sata Product Manual, Rev. E List of Figures Page Introduction About the Serial ATA Sata interface Drive specifications Specification summary tableWill display the warranty information for your drive Default logical geometry LBA modeFormatted capacity Cylinders Read/write heads Sectors per track 16,383Physical organization Physical characteristicsRecording and interface technology Seek time Start/stop timesTypical seek times Typical seek times msec Read WritePower specifications Conducted noise Typical current profileVoltage tolerance Power-management modes Power management modesActive mode Idle modeEnvironmental specifications Shock Operating shockNonoperating shock VibrationAcoustics Electromagnetic immunityDrive level acoustics Radio frequency environmentsFree Fall Protection feature Safety certificationReliability Agency certificationAustralian C-Tick N176 Korean RRLFCC verification Environmental protection Corrosive environment超出Page Momentus 7200.2 Sata Product Manual, Rev. E Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsDrive dimensions Drive mountingMomentus 7200.2 Sata Product Manual, Rev. E Serial ATA Sata interface Serial ATA connector pin definitionsSegment Pin Function Definition Pin Function Definition P10 Ground 2nd mate P11 ReservedSupported ATA commands Command name Command code in hex ATA-standard commandsATA-standard power-management commands Command name Command code in hexATA-standard security commands Identify Device command Word Description ValueXxxxH Description if bit is set to Bit Word Bit WordSet Features command Set Features command valuesA.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Momentus 7200.2 Sata Product Manual, Rev. E Seagate Technology support services InternetPresales Support Technical SupportData Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index ITE Sata Momentus 7200.2 Sata Product Manual, Rev. E Page Seagate Technology LLC
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