Information processing system, storage control apparatus, storage control method, and storage control program

Abstract

There is provided a storage control apparatus for improving the access performance of a storage medium and prolonging the life of the storage medium while suppressing an increase in fragmentation and a delay in normal write processing by avoiding frequent occurrence of rearrangement processing. This storage control apparatus includes a fragmentation evaluator that evaluates a degree to which data corresponding to a logical address area in a logical address space used by a host computer to access the storage medium is fragmented and stored in a plurality of physical address areas in a physical address space used in the storage medium, a timing selector that selects a timing of performing evaluation by the fragmentation evaluator, and a rearrangement instructor that instructs execution of data rearrangement processing of rearranging the data corresponding to the logical address area to be written in continuous physical address areas in the storage medium, based on the degree evaluated by the fragmentation evaluator at the timing.