Start Stop Times; Power Specifications; Power Consumption - Seagate ST320LT020 - 9YG142 Product Manual

2.8 S /
TART STOP TIMES
T
IME TO READY
Power-on to Ready (sec)
Standby to Ready (sec)
2.9 P
OWER SPECIFICATIONS
The drive receives DC power (+5V) through a native SATA power connector.
2.9.1

Power consumption

Power requirements for the drives are listed in the table on page 8. Typical power measurements are based on an average of drives tested,
under nominal conditions, at 25°C ambient temperature. These power measurements are done with Interface Power Management modes
like HIPM and DIPM enabled.
• 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 disk surface and does not execute a read or write
operation. Servo electronics are active. Seek mode power is measured based on three random seek operations every 100ms. This mode
is not typical.
• Read/write power and current
Read/write power is measured with the heads on track, based on three 63 sector read or write operations every 100ms.
• 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 model
Table 3 DC power
P
OWER DISSIPATION
Spinup (max)
Seek
Read
Write
Idle, performance*
Idle, active*
Idle, low power mode*
Standby**
Sleep
*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.
**Standby power is measured at steady state (after 200ms from transition)
M T P
OMENTUS HIN RODUCT
T M
YPICAL
3.5 4.0
3.0 3.0
+5V (25° C)
INPUT AVERAGE
1.00A
1.4W
1.3W
1.65W
1.1W
0.68W
0.48W
0.15W
0.15W
M , R . F
ANUAL EV
@ 25°C
AX
8