Patent ID: 8037267

Claim:
A remote copy system, comprising: a local controller group and a local storage device that are provided at a local site; a remote controller group and a remote storage device that are provided at a remote site; and a management computer, wherein the local controller group is configured from one or more local controllers, the local controller is connected to a higher-level device, the local storage device, the remote controller group, and the management computer, and has a first computer resource for local virtual computer operation, the local virtual computer is a computer that receives an access request from the higher-level device, and accesses a local storage device of any of the local storage device, in response to the access request, the remote controller group is configured from a plurality of remote controllers, the remote controllers are connected to the local controller group, the remote storage device, and the management computer respectively, and have a second computer resource for remote virtual computer operation, a plurality of the local virtual computers operate in the local controller, a plurality of the remote virtual computers that constitute respective pairs with the plurality of local virtual computers operate in the remote controller group, the local virtual computer executes a transfer process, and in the transfer process executes a process of reading out data from the local storage device, and transferring the read-out data to a second remote copy module that is executed by the remote virtual computer, which is partnered with the local virtual computer that executes a first remote copy module, the remote virtual computer receives data from the first remote copy module, and writes the received data to the remote storage device, the management computer has a migration processor, the migration processor migrates, from among a plurality of the remote virtual computers, two or more remote virtual computers, which belong to a group configured from remote virtual computers having remote copy patterns that are similar to one another, to the same remote controller, and a remote virtual computer having a dissimilar remote copy pattern and the two or more remote virtual computers do not reside in the same remote controller.