Patent ID: 7676644

Claim:
A data processing system comprising: a storage system including a plurality of physical resources providing logical volumes storing data from a host computer and; a management computer for managing the storage system, wherein, the logical volumes include capacity-fixed logical volumes and capacity-expansible logical volumes; each of the capacity-fixed logical volumes is associated one-to-one with one of first physical resource included in the plurality of physical resources; each of the capacity-expansible logical volumes is associated with a segment of one of second physical resources included in the plurality of physical resources and can be additionally associated with another segment of the one second physical resource or a segment of another second physical resource; the management computer includes an access right setting request unit for transmitting, to the storage system, a request to set a right to access a designated logical volume in response to an external input; the storage system includes a capacity-fixed logical volume access right setting unit and a capacity-expansible logical volume access right setting unit; when the designated logical volume is one capacity-fixed logical volume of the capacity-fixed logical volumes, the capacity-fixed logical volume access right setting unit sets an access right designated by the external input for the first physical resource associated with the one capacity-fixed logical volume, and stores the information about the setting in memory; and when the designated logical volume is one capacity-expansible logical volume of the capacity-expansible logical volumes, the capacity-expansible logical volume access right setting unit sets an access right designated by the external input for each of the segments of relevant second physical resource(s) that are associated with the one capacity-expansible logical volume, and stores the information about the setting in the memory.