Datasheet

Barracuda SATA Product Manual, Rev. A 15
www.seagate.com
Drive Specifications
2.7 Start/stop times
Start/stop times for alll models are listed below.
Time-to-ready may be longer than normal if the drive power is removed without going through normal OS power-
down 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 24
on page 24.
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.
*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 with DIPLM Enabled
Power-on to Ready (typ / max sec) <8.5
Standby to Ready (typ / max sec) <8.5
Ready to spindle stop (typ / max sec) 10
Table 2 DC power requirements (1-disk)
Power dissipation (1-disk values shown) Avg (watts 25° C) Avg 5V typ amps Avg 12V typ amps
Spinup — — 2.0 (peak)
Idle* † 4.60 0.378 0.224
Idle* † (with offline activity) 4.50 0.250 0.240
Operating 6.19 0.656 0.243
Standby 0.79 0.35 0.01
Sleep 0.79 0.35 0.01