Reformatted a bit to fit on page.
I have 6 of these (2TB) in each NAS Raid5 setup plus motherboard, AMD cpus, RAM etc.
This page is for researching a replacement PSU.
2.8.1 Power consumption
Power requirements for the drives are listed in Table 2 on page 15. 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-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
Avg (watts 25°C) Avg 5V typ amps Avg 12V typ amps
Spinup — — 2.1
Idle* † 4.5 0.151 0.303
Operating 5.8 0.440 0.300
Standby 0.50 0.085 0.01
Sleep 0.50 0.085 0.01
||Avg (watts 25°C)
||Avg 5V typ amps
||Avg 12V typ amps
*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, Standby and Sleep,with DIPLM Enabled