| 摘要 |
PROBLEM TO BE SOLVED: To easily restore data even when a plurality of servers in a cluster are simultaneously down, and both original data and duplicate data are simultaneously lost in a distributed processing system.SOLUTION: The backup of data is performed by a storage device(the backup server of a first backup device 5, the storage of a second backup device 6) of a backup system 10 disposed at the outside of the distributed processing system 1000. Even when a plurality of servers 3 in a distributed processing system 1000 (cluster 100) are simultaneously down, and both original data and duplicate data are simultaneously lost, it is possible to easily restore the data of a server 3 in which data are lost by using data stored in the storage device of a backup system 10. |
