| 摘要 |
PROBLEM TO BE SOLVED: To back up the data of the whole network system safely without preparing a large-capacity memory dedicated to backup operation. SOLUTION: Respective data processors T1, T2, and T3 specify data processors as backup destinations and send data on their hard disks. Further, a data processor specified as a backup destination copies data sent from a backup source to its own hard disk. Consequently, opposite-side data are backed up mutually by the data processors. |
