Patent ID: 7380093

Claim:
A storage system comprising: a primary computer on which at least one application program is executed; a storage apparatus inducing storage of a plurality of data used by the application program on one or a plurality of storage devices; and a secondary computer connected to the primary computer and the storage apparatus respectively and controlling allocation of storage areas to the application program; wherein the secondary computer comprises: a device management information management unit for managing device management information related to each storage device; a data management information management unit for managing data management information related to each data; and a control unit for controlling allocation of storage areas to the application program; and wherein the control unit considers a predetermined physical relationship between a requested storage area and already existing other storage areas using the data management information and the device management information when allocation of a storage area to an application program is requested, selects a storage area as a selected storage area according to characteristics of the data stored in the requested storage area, and issues prescribed instructions to the primary computer and the storage apparatus respectively so that the application program can use the selected storage area.