Patent ID: 7937513

Claim:
A first apparatus adapted to be coupled to a plurality of apparatuses, at least one of said plurality of apparatuses including a plurality of storage devices and a data read/write control unit executing data read/write processes to said plurality of storage devices based on a Redundant Array of Independent Disks (RAID) scheme, said first apparatus comprising: a control unit transmitting a request corresponding to a data write request or a data read request received from a computer with reference to mapping information between a first identification, designated by said data write request or said data read request received from said computer, and a second identification of an object from/to which a second apparatus of said plurality of apparatuses executes data read/write processes; wherein said control unit of said first apparatus receives a predetermined copy command related to said first identification and executes a copy process from said second apparatus to a third apparatus of said plurality of apparatuses, the second apparatus being unable to execute said predetermined copy command.