| 摘要 |
PROBLEM TO BE SOLVED: To provide a disaster recovery system capable of applying two systems being a hot standby by a semi-real time replication including a memory and disk, and a cold standby by disk replication to a plurality of recovery sites in an integrated manner.SOLUTION: The disaster recovery system has: a memory and disk update data extraction processing unit 205 for extracting update data of a virtual machine 101, and storing the update data in an update data storage area 201; a plural site data transfer processing unit 206 for transferring the data stored in the update data storage area 201 to a data center of a plurality of backup destinations; and a memory and disk backup data determination processing unit 207 for determining backup data corresponding to a level about disaster recovery of a backup destination on the basis of a synchronous point stored in an update data storage area 211, and storing the backup data in a virtual machine 111. |
