Patent ID: 7848183

Claim:
An information processing device performing replication of data between recording media so that valid information recorded in a first recording medium is recorded in a second recording medium, the information processing device comprising: a replication control unit controlling the replication of the data so that only information of an allocation space which is an area having the valid information recorded therein is read from the first recording medium serving as a replication source and the read valid information is written in the second recording medium serving as a replication destination, the replication control unit comprising: a replication region specifying unit to specify a plurality of allocation space descriptors of the first recording medium, each allocation space descriptor including a respective leading address and length of an allocation space, the allocation space representing an area that only has valid data to be replicated on the second recording medium, wherein the replication region specifying unit is enabled to sort the plurality of allocation space descriptors in order of the leading address.