Seagate SV35 Series HDD Product Manual, Rev. E
8
www.seagate.com
2.8
Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power connector. Refer to
Figure 1 on page 15
.
2.8.1
Power consumption
Power requirements for the drives are listed in
Table 2
and
Table 3
. 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 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
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.
† DIPLM Enabled
* 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.
†DIPLM Enabled
Table 2
DC power requirements (3-disk: 3TB and 2TB)
Power dissipation (3-disk values shown)
Avg (watts 25° C)
Avg 5V typ amps
Avg 12V typ amps
Spinup
—
—
2.0 (peak)
Idle1* †
5.40
0.190
0.377
Operating
8.00
0.510
0.462
Standby
0.75
0.136
0.005
Sleep
0.75
0.136
0.005
Table 3
DC power requirements (1-disk 1TB)
Power dissipation (1-disk values shown)
Avg (watts 25° C)
Avg 5V typ amps
Avg 12V typ amps
Spinup
—
—
2.0 (peak)
Idle1* †
3.36
0.152
0.216
Operating
5.90
0.500
0.329
Standby
0.63
0.111
0.006
Sleep
0.63
0.111
0.006
