Patent ID: 7424572

Claim:
A storage device system, comprising: a storage device of a first standard, having a first mainframe volume; and a storage device of a second standard different from said first standard, having a second mainframe volume, wherein each said storage device of said first standard and said storage device of said second standard has an open-system interface device, which are connected with each other via a Fibre Channel (FC) cable, wherein said first-standard storage device has: a mapping portion which maps said first mainframe volume to said second mainframe volume such that a mainframe host connected to said second-standard storage device can access all the data stored in said first mainframe volume via said second mainframe volume; and a virtual volume setting portion which sets a virtual volume of said first mainframe volume which can be identified as an open-system volume in which all storage areas of said first mainframe volume can be accessed, via said second mainframe volume, by an open-system host connected to said second-standard storage device.