Patent ID: 8095820

Claim:
A storage system comprising: a plurality of storage drives, a switch device connecting the storage drives, an I/O processing unit which accesses the storage drives via the switch device in accordance with a data input/output request received from an external device, a storage drive control unit which configures a group of the storage drives and operates the group by redundancy method, a broadcast transmitter which, when detecting a failure related to the storage drives, transmits broadcast to a communication path connecting the I/O processing unit and the storage drives, and a failure monitoring unit which, when receiving the broadcast, transmits a discover command to the switch device; wherein the storage system manages current redundancy of the group, manages a broadcast inhibiting flag by which information is set per storage drive whether to inhibit broadcast transmission, sets the broadcast inhibiting flag to inhibiting broadcast transmission when a failure occurs to the storage drive which constitutes the group being operated without redundancy, and when a failure related to the storage drive occurs, judges whether the broadcast inhibiting flag of the relevant storage drive is set to inhibiting broadcast transmission, and if it is set to inhibiting, inhibits transmission of the broadcast.