Seagate ST4000VM000 Product Manual page 15

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• 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-ms delay,
then a 16-sector read followed by a 32-ms 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 2 DC power requirements (3TB and 4TB)
Power dissipation (4-disk values shown)
Spinup
Idle* †
Operating
Standby
Sleep
*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
Video 3.5 HDD SATA Product Manual, Rev. A
Avg (watts 25° C) Avg 5V typ amps
— —
5.0 0.17
7.50 0.48
0.750 0.138
0.750 0.138
Drive Specifications
Avg 12V typ amps
2.0
0.35
0.43
0.005
0.005
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