Patent ID: 8122214

Claim:
A first storage system comprising: at least one first port to be coupled to a plurality of information processing units; at least one second port to be coupled to at least one second storage system; and a control unit managing a plurality of virtual volumes, one of the plurality of virtual volumes being mapped to a logical volume which is in the second storage system and being adapted to be used for inputting/outputting data by at least one of the plurality of information processing units so that the data are inputted/outputted to/from the logical volume, wherein the control unit operates a copy function between a copy source volume and a copy destination volume, the copy source volume being selectable from a plurality of volumes including at least one of the plurality of virtual volumes, the copy destination volume being selectable from a plurality of volumes including at least one of the plurality of virtual volumes displayed with a storage location of a logical volume mapped to the at least one of the plurality of virtual volumes selectable as the copy destination.