Patent ID: 7099904

Claim:
A computer system, comprising: a first computer; a plurality of storage systems coupled to the first computer over a network; and a second computer coupled to the first computer and the plurality of storage systems, wherein the first computer sends a request to the second computer, wherein the second computer has information about security level of the plurality of storage systems, selects, in response to the request from the first computer, one of the plurality of storage system according to the information in the second computer, and transmits a command to the selected one of the plurality of storage systems for creating a logical volume which is constructed on a physical disk device of the one of the plurality of storage systems for use by the first computer based on the request of the first computer, wherein the one of the plurality of storage systems creates the logical volume in accordance with the command, and forwards a creation completion notice to the second computer, and wherein after receiving the notice, the second computer notifies the first computer of path information of an access path from the first computer to the logical volume in the one of the Plurality of storage systems created by the one of the plurality of storage systems.