Fujitsu MJA2500BH Maintenance Manual - Page 37

1.11 Advanced Power Management (APM) Active Idle: The head is in a position of extreme inner in disk medium. (VCM Lock) Low Power Idle: Standby: The head is unloaded from disk. The spindle motor rotates. The spindle motor stops. In APM Mode-1, which is the APM default mode, the operation status shifts till it finally reaches "Low Power Idle." Table 1.7 Advanced Power Management APM Mode Mode-0 Mode-1 Mode-2 Active Idle (VCM Lock) 0.2-1.2 sec 0.1-0.2 sec 0.1-0.2 sec Low Power Idle (Unload) 15 min. 10.0-27.5 sec 10.0-27.5 sec Standby (Spin Off) N/A N/A 10.0-40.0 sec 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 seconds and to Low Power Idle in 15 minutes. Mode-1: Mode shifts from Active condition to Active Idle in 0.1-0.2 seconds and to Low Power Idle in 10.0-27.5 seconds. Mode-2: Mode shifts from Active condition to Active Idle in 0.1-0.2 seconds and 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. 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. C141-E293 1-15