Справочник Пользователя для Maxtor STM3250824AS

20

DiamondMax 21 Serial ATA Product Manual, Rev. C

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.

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 seek mode, the read/write actuator arm moves toward a specific position on the disc surface and 
does not execute a read or write operation. Servo electronics are active. Seek mode power represents the 
worst-case power consumption, using only random seeks with read or write latency time. This mode is not 
typical and is provided for worst-case information.

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.

 

Spinup

—

—

2.8 (peak)

Idle*

9.30

0.611

0.520

Seeking (random, 20% idle)

12.60

0.613

0.795

Standby and Sleep

0.80

0.106

0.023

Spinup

—

—

2.0 (peak)

Idle*

5.35

0.528

0.226

Seeking (random, 20% idle)

8.35

0.573

0.458

Standby and Sleep

1.80

0.035

0.008

Spinup

—

—

2.8 (peak)

Idle*

7.75

0.512

0.432

Seeking (random, 20% idle)

11.35

0.497

0.738

Standby and Sleep

1.24

0.221

0.011