Seagate Desktop HDD Product Manual - Page 14

Start/stop times, 2.8 Power specifications, 2.8.1 Power consumption, on Table 3

Page 14 highlights

www.seagate.com Drive Specifications 2.7 Start/stop times Power-on to ready (in seconds) Power-on to ready, 2.5A spin-up code option (in seconds, typical) Standby to ready (in seconds) Ready to spindle stop (in seconds) 3-disk (3TB, 2TB models) 2-disk (2TB, 1.5TB models) 15 (typical) 17 (max)

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Seagate Desktop HDD Product Manual, Rev. J
10
www.seagate.com
Drive Specifications
2.7
Start/stop times
Time-to-ready may be longer than normal if the drive power is removed without going through normal OS
powerdown procedures.
2.8
Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power connector. Refer to
Figure 1 on page 19
.
2.8.1
Power consumption
Power requirements for the drives are listed in
Table 3
,
Table 4
,
Table 5
and
Table 6
. 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.
3-disk
(3TB, 2TB
models)
2-disk
(2TB, 1.5TB
models)
1-disk
(1TB, 750GB
models)
1-disk
(250GB, 320GB,
500GB models)
Power-on to ready (in seconds)
15 (typical)
17 (max)
10 (typical)
12 (max)
8.5 (typical)
10 (max)
Power-on to ready, 2.5A spin-up
code option (in seconds, typical)
<10
n/a
Standby to ready (in seconds)
15 (typical)
17 (max)
10 (typical)
12 (max)
8.5 (typical)
10 (max)
Ready to spindle stop (in seconds)
10 (typical)
11 (max)
10 (typical)
11 (max)