STORAGE CONTROL APPARATUS, STORAGE CONTROL PROGRAM, AND STORAGE CONTROL METHOD

摘要

A storage control apparatus distributed on a network together with a cache device and a disc device so as to constitute a storage system, accepting an access request from a client, and causing a cache control device and a real disc control device to execute processing corresponding to the access request. The apparatus includes a data writing unit for controlling to write data requested to be written by a client into cache memories of two cache control devices, and a data reading unit which operates as follows. When data requested to be read by a client is not found in either of the two cache control devices, the data is read from the disc control device and the data read out is stored only in one of the cache control devices.