| 摘要 |
PROBLEM TO BE SOLVED: To ensure reconfiguration when abnormality occurs in one hard disk device in a mirror disk device. SOLUTION: A computer body operates a program for issuing a command for performing reading from respective hard disk devices 2A and 2B in a background, makes the mirror disk device check data match/mismatch of the hard disk devices by this reading, and makes, when mismatching or reading error, the mirror disk device repair a defective block by overwriting the relevant block of the hard disk device with abnormality using the relevant block data of the sound hard disk device. COPYRIGHT: (C)2007,JPO&INPIT
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