Patent ID: 8185582

Claim:
A storage system comprising: a host computer; at least one storage device including disk units and a controller, which provides a logical volume to the host computer based on the disk units and a plurality of storage functions; a management server storing storage function management information indicating that the at least one storage device provides the plurality of storage functions, and storing correspondence information indicating correspondence relationships between the plurality of storage functions and a plurality of system requests, wherein the management server: (A) receives a system request input which indicating one of the plurality of system requests; (B) decides that the system request input is satisfied by the provided storage function, based on the storage function management information and the correspondence information; (C) if the system request input is not satisfied, selects an validate candidate storage function and a validate candidate storage device which is one of the at least one storage device, for satisfying the system request input by validating the validate candidate storage function to the validate candidate storage device; and (D) in response to the system request input, displays an identifier of the validate candidate storage function and an identifier of the validate candidate storage device as a required function for satisfying the system request input, wherein if the system request input is satisfied by the provided storage function, the management server displays an identifier of the provided storage function as a required function for satisfying the system request input, and wherein if the validate candidate storage function is not selected in the (C), the management server displays that the system request input is not satisfied by the at least one storage device.