| 摘要 |
PURPOSE:To easily recovery a file of the multiple system by eliminating hardware common use by the providing the file with a copy attribute and a time stamp. CONSTITUTION:The file 3 is provided with the attribute flag 4 consisting of the copy attribute and time stamp and the flag is transferred and stored on a disk device (external storage device) 1 of a CPU whose copy attribute is on. If trouble occurs to one CPU, the copy attribute is referred to and the system is recovered with the file having the latest time stamp obtained from the CPU having the same file. Consequently, the multiple system is structured without having any common-use file and the recovery is easily made. |
