| 摘要 |
When CPU 11 receives a request to write to a file stored in a storage device 10 from client computers 30 through 32 , it references the object control table of the subject file, and confirms the WORM attribute of the subject file. The CPU 11 references the WORM range control table, and determines whether or not the write subject range is set to a WORM range. When the write subject range is not set to a WORM range, the CPU 11 executes write to the subject file. When WORM form is set for write data, the CPU 11 updates the WORM range control table and sets WORM form for the written data.
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