Patent ID: 8127097
Filing Date: 2012-02-28
Classification: G06F

Abstract:
1. A computer system comprising: a host computer configured to: said first storage system including a first interface, a first disk drive, and a first controller which provides, via the first interface, a first volume using the first disk drive; said second storage system coupled to the first storage system, including a second interface, a second disk drive, and a second controller which provides, via the second interface, a second volume using the second disk drive, wherein the second controller copies data of the second volume to the first volume, wherein, as the received information by the host computer, the first controller misrepresently provides, via the first interface, first information including (1) a certain storage ID as the storage ID of the first storage system, and (2) a certain volume ID as the volume ID of the first volume, and the second controller misrepresently provides, via the second interface, second information including (3) said certain storage ID as the storage ID of the second storage system, and (4) said certain volume ID as the volume ID of the second volume; wherein said host computer is configured to use said certain storage ID as the storage ID in said received information and to use said certain volume ID as the volume ID in said received information.