Start/Stop Times; Power Specifications; Power Consumption - Seagate SERIAL ATA ST3120213SCE Product Manual

2.7

Start/stop times

Power-on to Ready (sec)
Standby to Ready (sec)
Ready to spindle stop (sec)
2.8

Power specifications

The drive receives DC power (+5V and +12V) through a native SATA power connector. See Figure 5 on
page 25.
2.8.1

Power consumption

Power requirements for the drives are listed in the table on page 9. 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.
• Seek mode
During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and
does not execute a read or write operation. Servo electronics are active. Seek mode power represents the
worst-case power consumption, using only random seeks with read or write latency time. This mode is not
typical and is provided for worst-case information.
• Operating power and current
Operating power is measured using a standrad Consumer Storage Profile.
• 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.
DB35.2 Serial ATA Product Manual, Rev. B
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16 (max)
10 (max)
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