Patent ID: 7117336

Claim:
A computer system, comprising: a plurality of computers; and a plurality of storage systems coupled to said plurality of computers via a first network used for data transfer, wherein said plurality of computers include a management computer, wherein said management computer includes: a processor; a memory in which a plurality of programs for controlling said plurality of storage systems are stored and in which a database including information indicating a relation between a type of storage system and a program of the plurality of programs to be used for controlling a storage system belonging to the type, and an interface coupled to the plurality of storage systems and the plurality of computers via a local area network (LAN) which is different from the first network, wherein said processor selects one of said plurality of storage systems based on information sent by a one of said plurality of computers to the management computer via the LAN, specifies a type of said selected storage system, selects one of said plurality of programs which corresponds to the selected storage system based on the specified type of storage system and the information indicating a relation between the specified type of storage system and the selected one of said plurality of programs, and executes the selected one of said plurality of programs to send an instruction to the selected storage system via the LAN, wherein said selected storage system creates a logical storage area in accordance with the instruction sent from the management computer via the LAN, and wherein the one of the plurality of computers accesses to the logical storage area via the first network.