Patent ID: 7469330
Filing Date: 2008-12-23
Classification: G06F,H04L

Abstract:
1. A storage system having a first computer, a second computer connected to the first computer via a network, and a storage device system, wherein the storage device system is accessed by the second computer and has a plurality of storage areas of the storage device system, in the storage system, the second computer comprising: a plurality of storage areas of the second computer, which are recognized by the first computer; and a plurality of target devices of the second computer, which are recognized by the first computer; wherein the plurality of target devices of the second computer at least include target device A of the second computer, which is exclusively mounted on any of the plurality of storage areas of the second computer including storage area A of the second computer, the second computer further comprising: a receiving unit that receives a first request to access the storage area A of the second computer among the plurality of storage areas of the second computer; a target device identification module that identifies the target device A of the second computer from among the plurality of target devices of the second computer, in response to the first access request; a mounting module that exclusively mounts the identified target device A of the second computer on the storage area A of the second computer; and a transmission unit that transmits to the storage device system a second access request to identify a storage area A of the storage device system among the plurality of storage areas of the storage device system, which corresponds to the storage area A of the second computer; and the storage device system comprising: one or a plurality of physical storage devices forming the plurality of storage areas of the storage device system; a plurality of target devices of the storage device system for each of which one storage area of the storage device system among the plurality of storage areas of the storage device system, is allocated; a receiving unit that receives the second access request; and an allocation change module that allocates the storage area A of the storage device system to a target device A of the storage device system, which corresponds to the target device A of the second computer, according to the second access request, wherein the storage area A corresponds to a computer side storage area for which the access is requested and is a virtual storage area formed virtually according to the first access request, the second computer further comprises: computer side correspondence information that correlates the computer side storage area and the target device A, the target device identification module uses the computer side correspondence information to specify the target device A to be mounted in the requested computer side storage area, the storage device system further comprises: storage device system side correspondence information that correlates a virtual storage area and the target device A, and the allocation change module uses the storage device system side correspondence information to allocate the storage area A corresponding to the computer side storage area for which the access is requested to the specified target device A and forms the virtual storage area.