Patent ID: 7877782

Claim:
A storage apparatus, comprising: first and second storage systems; first and second computers, each having a CPU, a memory and a controller; said controller of said first storage system controlling data transfer between the first computer and a first volume of the first storage system and controlling data transfer between the second computer and a second volume of the second storage system to the second computer, said memory storing relationship information indicating a relationship between the first volume and the second volume, and first path information indicating security information related to a path between the first computer and the first volume, and first path information indicating security information related to a path between the second computer and the second volume, respectively; said memory storing the first volume and the second volume related to the first volume, on the basis of the relationship information; and a management computer having a second memory and a processor comparing the first path information related to a path between the first computer and the first volume with the first path information related to a path between the second computer and the second volume, and outputting the result of comparison; and said second memory storing second path information indicating security information related to a path between the first volume and the second volume related to the first volume.