| 摘要 |
PROBLEM TO BE SOLVED: To eliminate data loss in error recovery when a management apparatus manages disk devices different in control unit. SOLUTION: Data of a disk device D1 for managing/controlling reading and writing by LBA wherein 512 bytes are set as one block are mirrored by a display device D2. A storage management apparatus 10 controls access to the disk devices D1, D2 by LBA wherein 520 bytes are set as one block. A difference of the control units is solved by converting addresses by a control unit conversion part 12. Further when error recovery is executed, an address of an area in which data loss is generated due to exclusion from repair target by address conversion for recovery is registered in a data loss management table 14. In a succeeding patrol, the data loss management table 14 is referred to and an error in the address is reported and recovered to eliminate the data loss. COPYRIGHT: (C)2009,JPO&INPIT
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