Operating Modes; Figure 15. Mode Transition Times - IBM DTLA-305040 - Deskstar 41.1 GB Hard Drive Specifications

4.4.7 Operating modes

4.4.7.1 Operating mode descriptions
Operating mode
Spin-up
Seek
Write
Read
Idle
Standby
Sleep
Note: Upon power down or spindle stop a head locking mechanism will secure the heads in the OD
parking position.
4.4.7.2 Mode transition times
Mode transition times are shown below.
From
Standby Idle
Idle Standby
Standby Sleep
Sleep Standby
Note: The command is processed immediately but there will be an actual spin down time reflecting the
seconds passed until the spindle motor stops.

Figure 15. Mode transition times

Description
Start up time period from spindle stop or power down
Seek operation mode
Write operation mode
Read operation mode
Spindle motor and servo system are working normally. Commands can be
received and processed immediately.
Actuator is unloaded and spindle motor is stopped. Commands can be received
immediately.
Actuator is unloaded and spindle motor is stopped. Only soft reset or hard reset
can change the mode to standby.
To RPM
5400 (2 disks)
7200 (3 disks)
7200 (5 disks)
Deskstar 40GV & 75GXP hard disk drive specifications
Transition time
(typical )
(sec)
8
12
14
Immediately
Immediately
Immediately
17
Transition time
(max)
(sec)
31
31
31
Immediately
Immediately
Immediately