Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive specification
19
4.4.6 Operating modes
4.4.6.1 Description of operating modes
Note: Upon power down or spindle stop a head locking mechanism will secure the heads in the OD parking position.
4.4.6.2 Mode transition time
"Immediately" means within 1ms.
Note: The command is processed immediately but there will be an actual spin down time reflecting the seconds passed until
the spindle motor stops.
Table 13: Description of operating modes
Operating mode Description
Spin-up
Start up time period from spindle stop or power down.
Seek
Seek operation mode
Write
Write operation mode
Read
Read operation mode
Unload Idle
Spindle rotation at 7200 RPM with heads unloaded.
Idle
Spindle motor and servo system are working normally. Commands can be received and pro-
cessed immediately.
Standby
Actuator is unloaded and spindle motor is stopped. Commands can be received immediately.
Sleep
Actuator is unloaded and spindle motor is stopped. Only soft reset or hard reset can change the
mode to standby.
Table 14: Mode transition times
From To RPM
Transition time (sec)
Typical Maximum
Standby Idle 0 ---> 7200 15 31
Idle Standby 7200 ---> 0 Immediately Immediately
Standby Sleep 0 Immediately Immediately
Sleep Standby 0 Immediately Immediately
Unload idle Idle 7200 1 31
Idle Unload idle 7200 0.7 31
Low RMP Idle Idle 4500->7200 7 31
To Next Page
Loading...
