Hitachi HDS723020BLA642 - Mechanical Positioning

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4.5.2 Mechanical positioning
4.5.2.1 Single track seek time (without command overhead, including settling)
Common to all models and all seek modes
Function
Typical (ms)
Max (ms)
Read
0.5
0.7
Write
0.6
0.8
Table 6 Single Track Seek Time
4.5.2.2 Average latency
Rotational speed
Time for a revolution
(ms)
Average latency
(ms)
7200 RPM
8.3
4.16
Table 7 Latency Time
4.5.3 Drive ready time
Power on to ready
Typical (sec)
Maximum (sec)
3 Disk model
14
20
Table 8 Drive ready time
Ready The condition in which the drive is able to perform a media access command (such as
read, write) immediately.
Power on This includes the time required for the internal self diagnostics.