Storage device and method of controlling spindle motor of storage device

摘要

In a storage device, before activating a spindle motor (SPM) or continuously from activation until the SPM is stabilized at a target number of rotations, a voltage and temperature monitoring unit (101a) monitors the temperature in a disk enclosure unit and the voltage to be applied to an SPM driver (109). A current-amount limiting value calculating unit (101e) calculates an optimum current-amount limiting value not exceeding a rated current of the SPM driver, and a motor controlling unit (101f) controls the SPM driver and changes the current to be applied to the SPM so that the current does not exceed this optimum current-amount limiting value.