Hitachi HUS154530VLF400 User Manual

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification

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