Hitachi HTS541040G9AT00 Specifications - Page 30

Operating modes - diagnostic

Page 30 highlights

4.4.2.4 Average latency Table 9: Average latency Rotational speed (RPM) Time for one Average latency revolution (ms) (ms) 5400 11.1 5.5 4.4.2.5 Drive ready time Table 10: Drive ready time Condition Power on to Ready Drive ready time (sec) Typical Max 3.5 9.5 Ready Power on to Ready The condition in which the drive is able to perform a media access command (for example - read, write) immediately. This includes the time required for the internal self diagnostics. 4.4.3 Operating modes 4.4.3.1 Description of operating modes Table 11: Description of operating modes Operating mode Spin-up Seek Write Description Start up time period from spindle stop or power down. Seek operation mode Write operation mode Read Read operation mode Performance Idle Active idle Low power idle 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 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. Travelstar 5K100 Hard Disk Drive Specification 16

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Travelstar 5K100 Hard Disk Drive Specification
16
4.4.2.4
Average latency
4.4.2.5
Drive ready time
4.4.3
Operating modes
4.4.3.1
Description of operating modes
Table 9: Average latency
Rotational speed
(RPM)
Time for one
revolution (ms)
Average latency
(ms)
5400
11.1
5.5
Table 10: Drive ready time
Condition
Drive ready time (sec)
Typical
Max
Power on to Ready
3.5
9.5
Ready
The condition in which the drive is able to perform a media access command (for exam-
ple – read, write) immediately.
Power on to Ready
This includes the time required for the internal self diagnostics.
Table 11: 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
Performance Idle
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.
Active idle
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.
Low power idle
The head is unloaded onto the ramp position.
The spindle motor is rotating at full
speed.