Patent ID: 7054997

Claim:
A disk array system, comprising: a plurality of input/output channels for communicating with a host computer; a plurality of cache memories each coupled to said plurality of input/output channels exclusively and for storing input/output data temporarily; one or more disk drives; one or more disk adapters coupled to said one or more disk drives; and one or more networks for coupling said plurality of input/output channels to said one or more disk adapters, wherein each of said plurality of cache memories is directly connected to a corresponding one of said plurality of input/output channels on a one-to-one correspondence and exclusively controlled by said corresponding one of said plurality of input/output channels, wherein, when said system is provided with a plurality of said disk adapters, each of said plurality of input/output channels includes a destination disk adapter determining measure that determines which of said plurality of disk adapters couples said one or more disk drives which stores requested data upon receiving a data request from said host computer.