A storage system comprises: a storage device; and a controller operable to manage a primary volume in the storage system of a remote copy pair with a secondary volume of another storage system by using a storage area of the storage device, and send a first type copy data to said another storage system according to a remote copy procedure of the remote copy pair, so that said another storage system can update the secondary volume based on the first type copy data. The controller is operable to create a second type copy data by using performance data of the primary volume, and to send the second type copy data to said another storage system according to the remote copy procedure, so that said another storage system can use the performance data of the primary volume for performance data of the secondary volume based on the second type copy data.