Deskstar T7K500 Hard Disk Drive Specification
17
4.5.2.4 Average latency
4.5.3 Drive ready time
Ready The condition in which the drive is able to perform a media access command (for exam-
ple- read, write) immediately.
Power on This includes the time required for the internal self diagnostics.
Note: Max Power On to ready time is the maximum time period that Device 0 waits for Device 1 to assert PDIAG.
4.5.4 Operating modes
4.5.4.1 Description of operating modes
Note: Upon power down or spindle stop a head locking mechanism will secure the heads in the OD parking posi-
tion.
Table 8: Latency Time
Rotational speed
(RPM)
Time for one
revolution (ms)
Average latency
(ms)
7200 RPM 8.3 4.17
Table 9: Drive ready time
Power on to ready Typical (sec) Maximum (sec)
250-320 GB models 10 20
400/500 GB models 14 20
Table 10: 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
TActuator is unloaded and spindle motor is stopped. Only soft reset or hard reset can change
the mode to standby.
To Next Page
Loading...
Need help?
General