Operating Modes; Figure 13. Drive Ready Time - IBM DJSA-210 - Travelstar 10 GB Hard Drive Specifications

4.5.3 Operating modes

Operating mode
Spin-Up:
Seek:
Write:
Read:
Performance:
Active idle:
Low power idle:
Standby:
Sleep:
Figure 12. Operating mode
4.5.3.1 Mode transition time
Model
DJSA-232
DJSA-230/220
DJSA-210/205

Figure 13. Drive ready time

4.5.3.2 Operating mode at power on
The device goes into Idle mode after power on or hard reset as an initial state. Initial state may be
changed to Standby mode using pin C on the interface connector. Refer to section 7.10 on page 57,
"Drive address setting", for details.
Description
Start up time period from spindle stop or power down.
Seek operation mode
Write operation mode
Read operation mode
The device is capable of responding immediately to idle media access requests.
All electronic components remain powered and the full frequency servo remains
operational.
The device is capable of responding immediately to media access requests.
Some circuitry—including servo system and R/W electronics—is in power saving
mode. The head is parked near the mid-diameter the disk without servoing.
A device in Active idle mode may take longer to complete the execution of a
command because it must activate that circuitry.
The head is unloaded onto the ramp position.
The spindle motor is rotating at full speed.
The device interface is capable of accepting commands.
The spindle motor is stopped. All circuitry but the host interface is in power saving
mode.
The execution of commands is delayed until the spindle becomes ready.
The device requires a soft reset or a hard reset to be activated.
All electronics, including spindle motor and host interface, are shut off.
From
Standby
Standby
Standby
Travelstar 33GH/30GT/20GN hard disk drive specifications
To Transition
Time (typ)
Idle
Idle
Idle
16
Transition
Time (max.)
4.5 9.5
2.0 9.5
1.8 9.5