Seagate ST3750528AS ユーザーズマニュアル

Barracuda 7200.12 Serial ATA Product Manual, Rev.  B

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

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

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.

*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

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

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