Hitachi 7K320 - Travelstar Mobile Hard Drive Specifications page 20

4.4.2.5 Drive ready time
Condition
Power On To Ready
Table 9. Drive ready time
Ready
Power On To Ready This includes the time required for the internal self diagnostics.
Typical (sec)
4.0
The condition in which the drive is able to perform a media access command
(for example—read, write) immediately.
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7K320 SATA OEM Specification
Max. (sec)
9.5