Patent ID: 7127585

Claim:
A management device connectable to a storage device, the storage device having resources including a control processor, a cache memory, and a plurality of disk drives, the control processor controlling the storage device to store data to the disk drives, the cache memory being arranged to temporarily store data, and the disk drives being arranged to store data, the management device comprising: an input device; a processor; a memory; and a port connectable to the storage device, wherein the input device receives information including the number of a plurality of logical partitions of the storage device and characteristics information of each of the plurality of logical partitions, wherein the logical partitions are units each including a different partitioned part of the control processor, a different partitioned part of the cache memory, and a different partitioned part of the disk drives in said storage device, and wherein the processor calculates an amount of each of said resources to be assigned to each of the plurality of logical partitions based on resource information stored in the memory and based on relative functional relationships among each of said resources, the number of the plurality of logical partitions and the characteristics information and sends results of calculation and the number of the plurality of logical partitions to the storage device via the port.