Start/Stop Times; Power Specifications; Power Consumption - Seagate Video 2.5 HDD Product Manual

2.6

Start/stop times

Table 3 Start/stop times
Typical seek times (ms)
Power-on to ready
Standby to ready
2.7

Power Specifications

The drive receives DC power (+5V) through a native SATA power connector (refer to
2.7.1

Power consumption

Power requirements for the drives are listed in the table in
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 100 ms. 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 100 ms.
 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.
Table 4 DC Power Requirements
Power Dissipation
Spinup (max)
Seek average
Write average
Read average
(1)
Idle, performance
Idle, active
Idle, low power mode
(2)
Standby
Sleep
1. 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.
2. Standby power is measured at steady state (after 200ms from transition)
Seagate Video 2.5 HDD Product Manual, Rev. J (Draft 1)
Typical Max @ 25
3.0 4.0
2.5 3.0
Figure
Table 4. Typical power measurements are based on an average of drives tested, under
+5V input average (25° C)
1.00A
1.40W
1.70W
1.30W
1.20W
0.70W
0.45W
0.18W
0.18W
°
C
2).
Drive Specifications
10