Patent ID: 7865688

Claim:
A system comprising: a host computer; a plurality of storage systems each including a storage controller connected to the host computer; and a management computer connected to the host computer and to said storage system, wherein each said storage system comprises: at least one interface unit to be coupled to the host computer; a plurality of disk units configured to form a plurality of logical volumes; at least one processor coupled to the interface unit and adapted to control access between the host computer and at least one of the disk units; at least one memory unit adapted to hold write data and read data sent from the host computer and read from at least one of the disk units; and, a plurality of logical groups each configured by at least one of the logical volumes and logically divided partitions of the processor, the interface unit and the memory unit, wherein the memory unit is adapted to store structural information indicating the logical volume and the logically divided partitions of the processor, its throughput, the interface unit, its available function and an allotment rate of bandwidth of an internal network, belonging to each of the logical groups, and to store control information indicating whether a copy operation is allowed or not for each of the logical groups responsive to a copy request from the host computer, and wherein the processors configured throughout the plurality of storage systems each include the storage controller and are adapted to limit access to one of the storage controllers of the plurality of storage systems, wherein said one storage controller adds a user of the storage controller, selects suitable conditions required of the storage controller and adds new information to an information table, and wherein the logically divided partitions of the processor of a logical storage controller set in compliance with user's conditions during setting are updated by adding a new unit of logical division.