A storage control unit which processes an I/O request from a host apparatus is provided in the storage apparatus and the storage control unit creates a host group by mapping same to each supported OS type and configures a function according to the corresponding OS type for each of the host groups, creates a first volume on the storage apparatus and creates a second volume to which a physical storage area is dynamically allocated from a storage device, according to a volume creation instruction, and the storage control unit creates, according to an instruction to create a volume path from the first volume to the second volume, a volume path which passes through a third volume which is interposed between the first volume and second volume and has been allocated to the host group according to the OS type of the host apparatus provided by the first volume.