Power Consumption - Seagate ST3285N Product Manual

8 ST3655 Family SCSI Drives Product Manual, Rev. A
• Idle. The drive spindle motor is up to speed and the servo electronics
are active. The heads are on track, ready to accept and execute any
command without delay. The read/write electronics are powered
down. The drive can enter this mode from any other mode (except the
Standby mode).
• Standby. This mode is not implemented.

1.11.3 Power consumption

In the table below, the measurements are made at the drive power
connector with an RMS DC ammeter. The terminating resistor packs are
removed and terminator power is supplied through the SCSI connector.
All values are measured 10 minutes after the drive spins up.
Spinup
Current at +12V
Amps peak 1.90
RMS amps typ —
Watts typ —
Current at +5V
RMS amps typ —
Watts typ —
Power
Total watts typ 7.00
Read/
Seeking Write
— —
0.408 0.241
4.90 2.9
0.16 0.470
0.8 2.35
5.70 5.25
Idle
—
0.208
2.5
0.1
0.5
3.0