A cylinder switch time is defined as the amount of time required by the fixed disk to complete seek the
next sequential block after reading the last track in the current cylinder.
The measurement method is given in section 4.3.6, "Throughput" on page 13.
4.3.2.5 Single Track Seek Time (Without Command Overhead, Including Settling)
2.01.3Write (Quiet Seek Mode)
1.50.8Read (Quiet Seek Mode)
2.01.3Write
1.50.8Read
Maximum
(ms)
Typical
(ms)
Function
Figure 8. Single Track Seek Time
Single track seek is measured as the average of one (1) single track seek from every track with a random
head switch in both direction (inward and outward).
4.3.2.6 Average latency
4.178.37,200
Average latency
(ms)
Time/revolution
(ms)
Rotational speed
(RPM)
Figure 9. Latency Time
4.3.3 Drive ready time
31113
3192
3171
Maximum (seconds)Typical (seconds)Power on to ready
(Disks)
Figure 10. Drive ready time
Ready
The condition in which the drive is able to perform a media access command
(for example—read, write) immediately.
Power on
This includes the time required for the internal self diagnostics.
Note: Max Power On to ready time is the maximum time period that Device 0 waits for Device 1 to assert
PDIAG–.
Deskstar 60 GXP Hard disk drive specification
12
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