Seagate ST2000NM0031, 100650923 Extended Power Conditions PowerChoiceTM, A.R.T. Read Data Reports

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2.8.4.1Extended Power Conditions - PowerChoiceTM

Utilizing the load/unload architecture a programmable power management interface is provided to tailor systems for reduced power consumption and performance requirements.

The table below lists the supported power conditions available in PowerChoice. Power conditions are ordered from highest power consumption (and shortest recovery time) to lowest power consumption (and longest recovery time) as follows: Idle_a power >= Idle_b power >= Idle_c power >= Standby_z power. The further you go down in the table, the more power savings is actualized. For example, Idle_b results in greater power savings than the Idle_a power condition. Standby results in the greatest power savings.

Power Condition Name

Power Condition ID

Description

 

 

 

Idle_a

81H

Reduced electronics

Idle_b

82H

Heads unloaded. Disks spinning at full RPM

Idle_c

83H

Heads unloaded. Disks spinning at reduced RPM

Standby_z

00H

Heads unloaded. Motor stopped (disks not spinning)

Each power condition has a set of current, saved and default settings. Default settings are not modifiable. Default and saved settings persist across power-on resets. The current settings do not persist across power-on resets. At the time of manufacture, the default, saved and current settings are in the Power Conditions log match.

PowerChoice is invoked using one of two methods

•Automatic power transitions which are triggered by expiration of individual power condition timers. These timer values may be custom- ized and enabled using the Extended Power Conditions (EPC) feature set using the standardized Set Features command interface.

•Immediate host commanded power transitions may be initiated using an EPC Set Features "Go to Power Condition" subcommand to enter any supported power condition. Legacy power commands Standby Immediate and Idle Immediate also provide a method to directly transition the drive into supported power conditions.

PowerChoice exits power saving states under the following conditions

•Any command which requires the drive to enter the PM0: Active state (media access)

•Power on reset

PowerChoice provides the following reporting methods for tracking purposes

Check Power Mode Command

• Reports the current power state of the drive

Identify Device Command

•EPC Feature set supported flag

•EPC Feature enabled flag is set if at least one Idle power condition timer is enabled

Power Condition Log reports the following for each power condition

•Nominal recovery time from the power condition to active

•If the power condition is Supported, Changeable, and Savable

•Default enabled state, and timer value

•Saved enabled state, and timer value

•Current enabled state, and timer value

S.M.A.R.T. Read Data Reports

•Attribute 192 - Emergency Retract Count

•Attribute 193 - Load/Unload Cycle Count

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Contents Constellation ES Serial ATA Document Revision History Contents Serial ATA Sata interface Figures Seagate Technology Support Services Introduction About the Serial ATA Interface Drive Specifications Specification Summary TablesLBA mode Formatted CapacityDefault Logical Geometry Physical CharacteristicsRecording and Interface Technology Seek TimePower Specifications Power consumptionSTART/STOP Times 2TB models 1TB models 500GB models2TB Drive DC power requirements 1TB Drive DC power requirements 500GB Drive DC power requirements Typical current profiles 2TB model current profile 1TB model current profile 500GB model current profile Voltage tolerancePower-management modes Power modes Heads Spindle BufferActive mode Standby modeExtended Power Conditions PowerChoiceTM Power Condition Name Power Condition ID DescriptionPowerChoice is invoked using one of two methods A.R.T. Read Data ReportsPower Condition Identifiers Power Condition Name Power Condition Name Manufacturer Default Timer ValuesPowerChoice Supported Extended Power Condition Identifiers Temperature a. Operating Environmental LimitsHumidity Relative humidity AltitudeShock Operating shockAcoustics Fluid Dynamic Bearing FDB motor acousticsTest for Prominent Discrete Tones Pdts Electromagnetic ImmunitySafety certification ReliabilityAgency Certification Electromagnetic compatibilityFCC verification Korean RRLAustralian C-Tick N176 Corrosive Environment Environmental ProtectionChina Restriction of Hazardous Substances RoHS Directive Product Warranty Reference DocumentsShipping StorageSerial ATA Cables and Connectors Handling and STATIC-DISCHARGE PrecautionsConfiguring the Drive Mounting dimensions-top, side and end view Drive MountingLevel 2 security PurposeSeagate Enterprise SEDs Random Number Generator RNG Controlled AccessData Encryption Authenticated Firmware Download Power RequirementsSupported Commands Drive LockingATA Security Erase Unit Command on SED Sata Drives RevertspHOT-PLUG Compatibility Serial ATA Device Plug Connector PIN DefinitionsSerial ATA connector pin definitions Supported ATA Commands Command name Command code in hexCA H Identify Device command Word Description ValueXx 3F H Description if bit is set to Set Features command Set Features command values3 S.M.A.R.T. commands M.A.R.T. commandsIndex Psid RNG Index Seagate Technology LLC
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