| 摘要 |
PROBLEM TO BE SOLVED: To reduce the operation costs of a hard disk storage device by stopping a driving device by designing a hard disk not to be accessed. SOLUTION: This hard disk storage device converts a logical block position on the virtual volume of a Read/Write request issued by a host server into a logical block position on a logical unit, and converts the logical block position on the logical unit into a physical block position on a physical disk, and detects the logical block on a logical unit to be moved to the other logical unit satisfying predetermined conditions, and moves the logical block on the logical unit to another logical unit based on the physical block position on the physical disk converted in making the Read/Write request issued from the host server, and when the predetermined conditions are satisfied by the logical unit configured of an inexpensive/large capacity hard disk unit according to the movement, the physical disk configuring the logical unit is stopped. COPYRIGHT: (C)2007,JPO&INPIT
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