Patent ID: 7587551
Filing Date: 2009-09-08
Classification: G06F,H04L

Abstract:
1. A storage system, comprising: a plurality of disk drives; and a storage controller coupled to the plurality of disk drives for reading/writing data from/to the plurality of disk drives, the storage controller comprising: a plurality of interfaces connected to a plurality of host computers through an external storage area network (SAN); a cache memory storing data read from the plurality of disk drives and storing data to be written to the plurality of disk drives; and a plurality of processors connected to the plurality of interfaces and the cache memory through an internal network, and each of a plurality of processor groups, including two or more of the plurality of processors, causing at least one of the plurality of interfaces to transfer data, received from at least one of the plurality of host computers, from the at least one of the plurality of interfaces to the cache memory, and each of the plurality of processor groups causing the at least one of the plurality of interfaces to transfer data, to be transferred to the at least one of the plurality of host computers, from the cache memory to the at least one of the plurality of interfaces, wherein: