Patent ID: 8448167

Claim:
A storage system comprising: an information apparatus in which a virtualization mechanism is implemented to build at least one virtual machine; a storage apparatus which is coupled to the information apparatus, the storage apparatus including a first logical volume created for the virtualization mechanism and providing a storage area, the storage area including a virtual disk area and a virtual disk management area on the first logical volume, the virtual disk area being used by a first virtual machine of the at least one virtual machine to store data, the virtual disk management area storing management data for use by the first virtual machine to manage the virtual disk area; and a management computer which is coupled to the information apparatus and the storage apparatus, and which includes a remote copy controller configured to copy the virtual disk area and the virtual disk management area on the first logical volume of the storage apparatus to a storage area on a second logical volume included in a second storage device coupled to the storage apparatus, wherein the remote copy controller determines whether, on the second logical volume, there is the virtual disk management area used by the first virtual machine; when determining that the virtual disk management area is not on the second logical volume, the remote copy controller transmits, to the storage apparatus, an instruction to copy the virtual disk management area and the virtual disk area to the second logical volume.