Seagate Video 3.5 HDD Product Manual, Rev. A 11
www.seagate.com
2.8 Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power connector. (Refer to Figure 3).
2.8.1 Power consumption
Power requirements for the drives are listed in Table 2 on page 11. 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 (CE profile)
Operating power is measured by simulating a typical PVR operating environment, using a 50% write, 50% read
algorithm.
• 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
Table 2 DC power requirements for 1TB models
Spinup
Idle* †
Operating
Standby
Sleep
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. Measurement was taken in Idle 1 mode.
†5W IDLE, Standby and Sleep, with DIPLM enabled
Power dissipation (1-disk values shown) Avg (watts 25°C) Avg 5V typ amps Avg 12V typ amps
— — 1.6
2.502 0.152 0.145
3.676 0.385 0.145
0.819 0.15 0.005
0.819 0.15 0.005
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