Seagate ST1000NC001, ST1000NC000 manual Power-management modes, Power modes Heads Spindle Buffer

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2.8.4Power-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_a

ID Biased

Rotating

Enabled

 

 

 

 

Idle_b

Parked

Rotating

Enabled

 

 

 

 

Idle_c

Parked

Rotating at lower RPM

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 disk 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 disk 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 disk access is necessary.

Constellation CS Serial ATA Product Manual, Rev. C

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Contents ConstellationCS Serial ATA Document Revision History Revision Date Description of ChangeContents Sata Interface Figures Seagate Technology Support Services Introduction About the Sata interface Drive Specifications Specification summary tablesModel Formatted capacity Guaranteed sectors Bytes per sector Formatted capacityPhysical characteristics LBA modeDefault logical geometry LBA modeSeek time Power specificationsPower consumption Start/stop times3TB Drive DC power requirements Peak operating current sequential writeTypical current profiles 3TB model current profile 2TB model current profile 1TB model current profile Conducted noise Voltage tolerancePower-management modes Power modes Heads Spindle BufferExtended Power Conditions PowerChoiceTM Power Condition Name Power Condition ID DescriptionPowerChoice is invoked using one of two methods PowerChoice Supported Extended Power Condition Indentifiers Power Condition Name Manufacturer Default Timer ValuesEPC Subcommands Descriptions Power Condition Power Condition Name IdentifiersHumidity Ambient temperatureEnvironmental limits OperatingVibration AltitudeShock Non-operatingAcoustics Test for Prominent Discrete Tones PDTsElectromagnetic immunity Agency certification Safety certification Electromagnetic compatibilityFCC verification Korean RRLAustralian C-Tick N176 China Restriction of Hazardous Substances RoHS Directive Product warrantyEnvironmental protection Corrosive environmentShipping StorageProduct repair and return information Handling and static-discharge precautions Configuring the driveSata cables and connectors Mounting dimensions Drive mountingSanitize Feature Set on SED Drives Power requirementsATA Security Erase Unit Command on SED Sata drives Data encryptionSata Interface Hot-Plug compatibilitySata device plug connector pin definitions Sata connector pin definitionsSupported ATA commands Command name Command code in hexF1H Identify Device command Word Description ValueBit Word 69-74Smart error login is supported Set Features command 0CH3 S.M.A.R.T. commands Code in features register A.R.T. commandIndex Constellation CS Serial ATA Product Manual, Rev. CConstellation CS Serial ATA Product Manual, Rev. C Constellation CS Serial ATA Product Manual, Rev. C Seagate Technology LLC Americas
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