Patent ID: 7895467

Claim:
A storage control system, comprising: a plurality of storage apparatuses; and a controller for sending and receiving data between said plurality of storage apparatuses and a host system; each of said storage apparatuses includes: a plurality of storage mediums configuring a plurality of RAID groups; and a plurality of spare mediums for saving stored data of a storage medium subject to a failure among said plurality of storage mediums; wherein each of said plurality of storage apparatuses stores a physical capacity, a physical performance, an operational capacity, and an operational performance thereof as unique information, said operational capacity and operational performance being used for managing a plurality of storage apparatuses having different physical capacities and physical performances, as same-type storage apparatuses, wherein when one of said plurality of storage mediums failed, the controller: searches for at least one spare medium whose operational performance and operational capacity are same as those of the failed storage medium, among said plurality of spare mediums; determines, if no such at least one spare medium exists, that there is no spare medium capable of recovering data; selects, if more than one spare medium exist, one of them based on comparison between physical performances and physical capacities of the spare mediums and those of the failed storage medium; and recovers the data stored in the failed storage medium to the selected storage medium.