Drive Ready Time; Operating Modes; Table 9: Latency Time; Table 10: Drive Ready Time - Hitachi HTS541010G9AT00 - Travelstar 100 GB Hard Drive Specifications

4.4.2.4 Average latency

Table 9: Latency Time

Rotational speed
(RPM)
5400

4.4.3 Drive ready time

Table 10: Drive ready time

Condition
Power on to ready
Ready
Power on
Note: Max Power On to ready time is the maximum time period that Device 0 waits for Device 1 to assert PDIAG

4.4.4 Operating modes

Table 11: Description of operating modes

Operating mode
Spin-up
Seek
Write
Read
Performance Idle
Active Idle
Low Power Idle
Standby
Sleep
Note: Upon power down or spindle stop a head locking mechanism will secure the heads in the OD parking posi-
tion.
Time for one
revolution (ms)
11.1
Typical (sec)
3.5
The condition in which the drive is able to perform a media access command (for exam-
ple- read, write) immediately.
This includes the time required for the internal self diagnostics.
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 media access requests. All electronic com-
ponents remain powered and the servo remains operational.
The device is capable of responding immediately to the media access requests. Some circuitry -
including servo system and Read/Write electronics - is in power saving mode. The head is
parked near the mid-diameter the disk without servo control. A device in Active idle mode may
take longer to complete the execution of a command because it must activate the circuitry.
The head is unloaded onto the ramp position. The spindle motor is rotating at full speed.
Actuator is unloaded and spindle motor is stopped. Command can be received immediately.
TActuator is unloaded and spindle motor is stopped. Only soft reset or hard reset can change
the mode to standby.
Travelstar 5K100 (Serial ATA) Hard Disk Drive Specification
Average latency
(ms)
5.5
Maximum (sec)
9.5
18