Table 1.7 Advanced Power Management - Fujitsu MHV2120BH Product Manual

Device Overview
Low Power Idle:
Standby:
In APM Mode-1, which is the APM default mode, the operation status shifts till it
finally reaches "Low Power Idle."
APM Mode
Mode-0
Mode-1
Mode-2
When the maximum time that the HDD is waiting for commands has been
exceeded:
Mode-0: Mode shifts from Active condition to Active Idle in 0.2-1.2, and to Low
Mode-1: Mode shifts from Active condition to Active Idle in 0.1-0.2 seconds and
Mode-2: Mode shifts from Active condition to Active Idle in 0.1-0.2 seconds and
Remark:
The default values of these settings are reflected in the WORD 91 values of the
IDENTIFY DEVICE command. Also, the APM mode is initialized to Mode-1
(default value) at power-off.
The above mentioned is time until shifting to each power mode based on point
that the drive becomes a command waiting state.
1-14
The head is unloaded from disk.
The spindle motor rotates.
The spindle motor stops.

Table 1.7 Advanced Power Management

Active Idle
(VCM Lock)
0.2-1.2 sec
0.1-0.2 sec
0.1-0.2 sec
Power Idle in 15 minutes.
to Low Power Idle in 10.0-27.5 seconds.
to Low Power Idle in 10.0-27.5 seconds. After 10.0-40.0 seconds in
Low Power Idle, the mode shifts to standby.
Low Power Idle
(Unload) (Spin Off)
15 min.
10.0-27.5 sec
10.0-27.5 sec 10.0-40.0 sec
Standby
N/A
N/A
C141-E224