Patent ID: 7225191
Filing Date: 2007-05-29
Classification: G06F,Y10S

Abstract:
1. A computer-implemented method of accessing one of a plurality of logical volumes stored on a plurality of storage systems in an enterprise, the one of the plurality of logical volumes being stored on at least one of the storage systems, the method comprising steps of: receiving from a host computer an access request to access data stored on the one of the plurality of logical volumes, the access request specifying an enterprise logical volume identifier (ELVID) for the one of the plurality of logical volumes and a physical storage address for the one of the plurality of logical volumes, wherein the ELVID uniquely identifies the one of the plurality of logical volumes among the plurality of logical volumes, so that the ELVID is usable to access the one of the plurality of logical volumes on at least two of the plurality of storage systems, and wherein the physical storage address specifies one of the plurality of storage systems in the enterprise; and in response to the access request, verifying that the one of the plurality of logical volumes identified by the ELVID provided in the access request is stored on the one of the plurality of storage systems specified in the physical storage address provided in the access request.