Patent ID: 8074100

Claim:
A computer-readable recording medium that includes a restore management program that, when executed by a processor, instructs a computer to perform a method of restoring data stored in a backed up disk, the method comprising: restoring, by a restore performing unit that performs restoration in units of data blocks, the data which is stored in plural slices of the backed up disk; storing, by the restore performing unit, the data into plural slices of a restore disk which is distinct from the backed up disk; managing, by a management unit, the progress of the restoration performed by the restore performing unit in the units of data blocks; and controlling, by an access controlling unit that references the progress of the restoration managed by the management unit, the restore performing unit to restore the units of data blocks sequentially starting from a data block with a smallest address number, to change the order of restoration to interrupt the restoring according to the address number, and to preferentially restore the data stored in one of the plural slices of the backed up disk, which includes a region where the restoration is not completed, in response to a data access request to the region.