| 摘要 |
PROBLEM TO BE SOLVED: To automatically restore a file system from management information duplexed in a reserve disk unit when a management information region is destroyed to cause file system trouble. SOLUTION: When a user 01 requests updating of file data through a data updating means 11, a file system updating means 12 updates file system management information and file data. At this time, a file system management information duplexing means 13 duplexes the file system management information in the reserve disk unit 51. When a file system management information trouble monitoring means 14 detects the trouble of management information, a file system management information automatic restoring means 15 automatically restores the management information of the file system in which the trouble of management information is detected, into the file system management information from the reserve disk unit 51. COPYRIGHT: (C)2004,JPO
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