Seagate ST9250612NS, ST9500622NS, ST9500621NS manual PowerChoice is invoked using one of two methods

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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 customized 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 Imme- diate and Idle Immediate also provide a method to directly transition the drive into supported power condi- tions.

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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Constellation.2 Serial ATA Product Manual, Rev. B

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Contents Standard Models Self-Encrypting Drive Models ST91000642NS ST9500622NS ST9250612NSSED Fips 140-2 Models Revision history Revision Date Sheets affected or commentsContents Serial ATA Sata interface List of Figures Page Seagate Technology support services Seagate Online Support and ServicesIntroduction About the Serial ATA interface Drive specifications Specification summary tablesDrive specifications summary for 1TB, 500 and 250 GB models Constellation.2 Serial ATA Product Manual, Rev. B Formatted capacity Default logical geometryLBA mode Recording and interface technologyStart/stop times Physical characteristicsSeek time Typical seek times ms Read WriteSpinup power Power specificationsPower consumption Standby modeST91000640NS Parameter 0GB Voltage +12 1000GB drive Standard & SED model DC power requirementssPower Regulation +10/-7.5% Watts500GB drive Standard & SED model DC power requirements ST9500620NS Parameter 0GB Voltage +12250GB drive Standard & SED model DC power requirements ST9250610NS Parameter 0GB Voltage +12Typical current profiles Conducted noise Voltage toleranceIdle mode Power-management modesActive mode Sleep modePowerChoice is invoked using one of two methods Power Condition Name Power Condition ID DescriptionEnvironmental limits Temperature a. OperatingRelative humidity Operating shock Effective altitude sea levelShock Nonoperating shockOperating vibration AcousticsVibration Nonoperating vibrationRadio frequency environments Electromagnetic immunityReliability Test Description Performance level Reference standardAgency certification Environmental protection Product warrantyReference documents Storage ShippingProduct repair and return information Corrosive environment China Restriction of Hazardous Substances RoHS DirectiveConfiguring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingCooling Air flowPurpose About FipsLevel 2 security About self-encrypting drives Controlled accessAdmin SP Data encryptionDrive locking Default passwordRandom number generator RNG Data bandsSupported commands Authenticated firmware downloadPower requirements Cryptographic eraseSerial ATA Sata interface Hot-Plug compatibilitySignal Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions Pin Function DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex F4H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordWord Set Features command Set Features command valuesA.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Index ITE Page Constellation.2 Serial ATA Product Manual, Rev. B Page Disc Drive, Scotts Valley, California 95066-4544, USA
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