Seagate ST32000542AS, ST31000520AS, ST31500541AS manual Power specifications

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2.7Power specifications

The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 4 on page 20.

2.7.1Power consumption

Power requirements for the drives are listed in the table on page 9. Typical power measurements are based on an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient temperature.

• Spinup power

Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.

• Read/write power and current

Read/write power is measured with the heads on track, based on a 16-sector write followed by a 32-msec delay, then a 16-sector read followed by a 32-msec delay.

• Operating power and current

Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each 10 reads) and 20 percent drive idle mode.

• Idle mode power

Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.

• Standby mode

During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/ write electronics are in power-down mode.

8	Barracuda LP Series SATA Product Manual, Rev. A

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Contents

Barracuda LP Series Sata ST32000542AS ST31500541AS ST31000520ASRevision history Revision DateContents Barracuda LP Series Sata Product Manual, Rev. a List of Figures Page Introduction About the Serial ATA interface Drive specifications Drive specifications summary for 2000 and 1500 Gbyte models Drive specification ST32000542AS ST31500541AS ST31000520ASBarracuda LP Series Sata Product Manual, Rev. a Formatted capacity Default logical geometryLBA mode Recording and interface technologyTypical access times msec Read Write Physical characteristicsAccess time Start/stop timesPower specifications DC power requirements Typical current profiles Conducted noise Voltage toleranceIdle mode Power-management modesActive mode Sleep modeEnvironmental specifications Nonoperating shock ShockOperating shock VibrationElectromagnetic immunity Drive A-weighted Sound Power Levels SWL, BAAcoustics Test for Prominent Discrete Tones PDTsAgency certification Safety certificationReliability Electromagnetic compatibilityFCC verification Korean RRLAustralian C-Tick N176 Environmental protection Corrosive environmentConfiguring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions 2.0, 1.5 and 1.0 TB models Drive mountingBarracuda LP Series Sata Product Manual, Rev. a Serial ATA Sata interface Hot-Plug compatibilitySignal Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions Pin Function DefinitionCommand name Command code in hex Supported ATA commandsSupported ATA commands F3H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordWord Set Features command Set Features command valuesCode in features register A.R.T. command 3 S.M.A.R.T. commandsA.R.T. commands Technical Support Seagate Technology support servicesPresales Support Data Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index ITE Page Barracuda LP Series Sata Product Manual, Rev. a Page Seagate Technology LLC