| 摘要 |
PROBLEM TO BE SOLVED: To efficiently acquire backup of data.SOLUTION: A storage unit 1a stores data assigned to a virtual machine 1c which operates in an information processing device 1, in association with a key. An operation unit 1b determines a virtual machine which takes charge of storage of data for a storage device 3 on the basis of a hash value calculated from a key associated with the data and a hash function used by virtual machines 1c and 2c in common. When the determined virtual machine in charge corresponds to the virtual machine 1c, the operation unit 1b controls the virtual machine 1c to store data in the storage device 3. When the determined virtual machine in charge does not correspond to the virtual machine 1c, the operation unit 1b controls the virtual machine 1c not to store data in the storage device 3. |
