Patent ID: 7296041

Claim:
A management terminal comprising; a CPU; a management program executing to perform settings on the file servers; and a network interface coupled to a network, to which the file servers are coupled, wherein the management program: instructs each of the file servers to configure plural virtual file systems, and issues a file system transfer instruction to one of the file servers, the file system transfer instruction instructs the one of the file servers to transfer a virtual file system configured in the one of the file servers to another one of the file servers; wherein, according to one of the file system transfer instructions, the one of the file servers: shuts down execution of the virtual file system, and transfers configuration of the virtual file system to another one of the file servers; and the another one of the filer servers: obtains the configuration information of the virtual file system whose configuration is transferred, and configures the virtual file system using the configuration information obtained, wherein each of the file servers is coupled to a storage system including a shared logical unit shared between the file servers and the configuration information for the plural virtual file systems is stored in the shared logical unit, when the management program issues the file system transfer instruction, the configuration information indicating a logical unit in the storage system assigned for the virtual file system and the network interface used for the virtual file system is updated according to the file system transfer instruction, and the another one of the file servers reads the updated configuration information from the shared logical unit and configures the virtual file system using the configuration information.