Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 28)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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4.5.1.2 Full stroke seek time
Full stroke seek is measured as the average of 1,000 full stroke seeks with a random head switch from both directions (inward
and outward).
4.5.1.3 Average latency
Table 8: Latency time
Model Command Typical (ms) Max
450 GB Read 6.2 11.1
Write 7.1 11.5
300 GB Read 5.8 9.4
Write 6.4 10.1
Rotation Time for a revolution (ms) Average latency (ms)
15,000 RPM 4.0 2.0