Operating Modes; Table 8: Average Latency; Table 9: Drive Ready Time; Table 10: Description Of Operating Modes - Hitachi IC25N040ATMR04-0 - Travelstar 40GB Laptop Hard Drive 9.5mm 2.5 Inch Notebook HDD Specifications

4.4.2.4 Average latency

Table 8: Average latency

Rotational speed
(RPM)
4200
4.4.2.5 Drive ready time

Table 9: Drive ready time

Condition
Power on to Ready
Ready
Power on to Ready

4.4.3 Operating modes

4.4.3.1 Description of operating modes

Table 10: Description of operating modes

Operating mode
Spin-up
Seek
Write
Read
Performance Idle
Active idle
Low power idle
Time for one Average latency
revolution (ms)
14.3
Drive ready time (sec)
Typical
3.0
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 idle media access requests. All
electronic components remain powered and the full frequency servo remains opera-
tional.
The device is capable of responding immediately to media access requests. Some cir-
cuitry—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.
Travelstar 80GN Hard Disk Drive Specification
(ms)
7.1
Max
9.5
19