Seagate Power Specifications and Requirements for SATA Drives
Page 19

2.7Power specifications

The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 2 on page 22.

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.

Table 4:

DC power requirements

 

 

 

 

 

 

 

Power dissipation (2-disc values shown)

Avg (watts 25° C)

Avg 5V typ amps

Avg 12V typ amps

 

 

 

 

 

Spinup

 

—

—

2.0 (peak)

 

 

 

 

 

Idle* †

 

5.0

0.168

0.337

 

 

 

 

Idle* † (with offline activity)

5.40

0.153

0.387

 

 

 

 

 

Operating

 

6.57

0.496

0.341

 

 

 

 

 

Standby

 

0.79

0.35

0.01

 

 

 

 

 

Sleep

 

0.79

0.35

0.01

 

 

 

 

 

Table 5:

DC power requirements

 

 

 

 

 

 

 

Power dissipation (1-disc values shown)

Avg (watts 25° C)

Avg 5V typ amps

Avg 12V typ amps

 

 

 

 

 

Spinup

 

—

—

2.0 (peak)

 

 

 

 

 

Idle* †

 

4.60

0.378

0.224

 

 

 

 

Idle* † (with offline activity)

4.50

0.250

0.240

 

 

 

 

 

Operating

 

6.19

0.656

0.243

 

 

 

 

 

Standby

 

0.79

0.35

0.01

 

 

 

 

 

Sleep

 

0.79

0.35

0.01

 

 

 

 

 

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.

†5W IDLE with DIPLM Enabled

Barracuda 7200.12 Serial ATA Product Manual, Rev. B

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Contents Barracuda 7200.12 Serial ATA Revision Date Sheets affected or comments Revision historyContents Barracuda 7200.12 Serial ATA Product Manual, Rev. B List of Figures Page Introduction About the Serial ATA interface Drive specifications Drive specifications summary for 1000 and 750 Gbyte models Will display the warranty information for your drive Drive specifications summary for 500 Gbyte models Tem will display the warranty information for your drive Drive specifications summary for 250 Gbyte models Will display the warranty information for your drive Cylinders Read/write heads Sectors per track 16,383 Default logical geometryLBA mode Formatted capacityRecording and interface technology Physical characteristics750 GB models 500, 320, 250 and 160 GB models Seek timeStart/stop times Typical seek times msec Read WritePower specifications Sleep mode Power-management modesActive mode Idle modeEnvironmental specifications 500, 320, 250 and 160 GB models ShockOperating shock Nonoperating shock 750 GB modelsTest for Prominent Discrete Tones PDTs AcousticsElectromagnetic immunity Fluid Dynamic Bearing FDB motor acousticsElectromagnetic compatibility Safety certificationReliability Agency certificationAustralian C-Tick N176 Korean RRLFCC verification Corrosive environment Environmental protectionHandling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensions 1000 and 750 GB modelsMounting dimensions 500, 320, 250 and 160 GB models Hot-Plug compatibility Serial ATA Sata interfacePin Function Definition Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions SignalSupported ATA commands Supported ATA commandsCommand name Command code in hex F3H Word Description Value Identify Device commandXx07H Bit Word Description if bit is set to Bit WordShall be cleared to Set Features command values Set Features commandM.A.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Presales Support Seagate Technology support servicesTechnical Support Data Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index ITE Page Barracuda 7200.12 Serial ATA Product Manual, Rev. B Page Seagate Technology LLC
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