Hard disk drive controller, image forming apparatus and storage medium with recorded computer program

A hard disk drive controller comprising:

• a determining unit that determines an external dimension of a hard disk drive that is provided with a motor for rotating a hard disk and a head that is retractable from the hard disk;
• and
• a changing unit that changes control of the hard disk drive device according to the external dimension that has been determined by the determining unit,
• wherein, when the external dimension was not able to be determined by the determining unit, the changing unit changes control of at least one of the following:
• a decrease in the number of cycles of power supply on-off to the hard disk drive;
• a decrease in the number of times the head is retracted;
• and/or
• a decrease in the rotation duration of the motor.

An image forming apparatus comprising:

• a energy saving switching unit that shifts the image forming apparatus into an energy saving mode according to pre-set conditions;
• a determining unit that determines an external dimension of a hard disk drive section;
• and
• a changing unit that, when the external dimension that has been determined by the determining unit is a predetermined value or above, changes control of the hard disk drive so as to suppress the number of retraction cycles of a head within the hard disk drive.

A computer readable medium storing a program causing a computer to execute a process for controlling a hard disk drive, the process comprising:

• determining an external dimension of a hard disk drive that is provided with a motor for rotating a hard disk and a head that is retractable from the hard disk;
• and
• controlling the hard disk drive according to the external dimension that has been determined by the determining unit,
• wherein controlling the hard disk drive comprises at least one of;
• changing in the number of cycles of power supply on-off to the hard disk drive according to the external dimension,
• changing in the number of times the head is retracted according to the external dimension, and
• changing in the rotation duration of the motor according to the external dimension.

A control method for a hard disk drive, comprising:

• determining an external dimension of a hard disk drive that is provided with a motor for rotating a hard disk and a head that is retractable from the hard disk;
• and
• controlling the hard disk drive according to the external dimension that has been determined by the determining unit,
• wherein controlling the hard disk drive comprises at least one of:
• changing in the number of cycles of power supply on-off to the hard disk drive according to the external dimension,
• changing in the number of times the head is retracted according to the external dimension, and
• changing in the rotation duration of the motor according to the external dimension.

A control method for a hard disk drive, comprising:

• determining an external dimension of a hard disk drive that is provided with a motor for rotating a hard disk and a head that is retractable from the hard disk;
• and
• controlling the hard disk drive according to the external dimension that has been determined by the determining unit,
• wherein controlling the hard disk drive comprises at least one of when the external dimension was not able to be determined by the determining step,
• decreasing in the number of cycles of power supply on-off to the hard disk drive,
• decreasing in the number of times the head is retracted, and
• decreasing in the rotation duration of the motor.