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Seagate Desktop SSHD Product Manual, Rev. C 7
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.
* Hybrid time-to-ready specification assumes all needed data files are pinned to flash, Windows 8 environment, and fast BIOS implemented
2.8 Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power connector. Refer to Figure 2 on page 15.
2.8.1 Power consumption
Power requirements for the drives are listed in Table 1, 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 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.
4-disk
(4TB)
2-disk
(2TB)
1-disk
(1TB)
Power-on to ready*
(in seconds)
<1 <1 <1
Standby to ready*
(in seconds)
<1 <1 <1
Ready to spindle stop
(in seconds)
10 (typical)
11 (max)
10 (typical)
11 (max)
10 (typical)
11 (max)
Figure 1 DC power requirements (4-disk: 4TB model)
Power dissipation (4-disk values shown) Avg (watts 25° C) Avg 5V typ amps Avg 12V typ amps
Spinup — — 2.0
Idle* † 6.20 0.50 0.31
Operating 7.50 0.48 0.43
Standby 0.750 0.138 0.005
Sleep 0.750 0.138 0.005