Patent ID: 8296468

Claim:
A storage system, which is coupled to a host computer and a plurality of external storage systems including an external storage device storing data sent from the host computer via the storage system, the storage system comprising: a plurality of internal storage devices storing data sent from the host computer; a controller being configured to manage a first logical unit provided with the plurality of internal storage devices and a second logical unit provided with the plurality of external storage devices in the external storage system; and a memory storing profile information indicating a relation between a path control method and a model of an external storage system, wherein the controller is configured to send an inquiry command to each of the external storage systems, receive inquiry data including information regarding a model of each of the external storage systems from each of the external storage systems, detect a model of each of the external storage systems by referring to the received inquiry data, and set path control methods which are used to transfer data to each of the external storage systems based on the detected model of each of the external storage systems and the profile information.