Patent ID: 8667030

Claim:
A storage system, comprising: a storage apparatus comprising a plurality of physical storage devices constituting a RAID group including a plurality of logical volumes, a storage unit of the storage apparatus storing power status management information indicating power statuses of the plurality of the logical volumes, and a control unit of the storage apparatus for controlling the power statuses of the plurality of the logical volumes in at least a normal state or a power saving state; a file server comprising a control unit of the file server for processing a file system which is defined by the plurality of the logical volumes and manages data to be stored in the plurality of the logical volumes, and a storage unit of the file server for storing utilization status management information indicating utilization statuses of the plurality of the logical volumes; and a management computer which instructs the file server to create the file system according to identification information of a logical volume which is capable of creating the file system, wherein the control unit of the file server included in the file server transmits the identification information of the logical volume which is capable of creating the file system to the management computer, the identification information being determined based on the power statuses of the plurality of the logical volumes included in the power status management information acquired from the storage apparatus and the utilization statuses of the plurality of the logical volumes included in the utilization status management information, wherein the management computer comprises a display device of the management computer which displays the logical volume which is capable of creating the file system as selectable and displays the logical volume which is not capable of creating the file system as unselectable or displays nothing, based on the received identification information, wherein storage unit of the storage apparatus stores a RAID group logical unit (LU) management table which stores in corresponding relation with respect to each logical unit a RAID group ID, a storage logical unit number (LUN), a Host LUN and said power status information, wherein the storage unit of the file server stores a LU management table which stores in corresponding relation with respect to each logical unit a LUN, LUN name and said utilization status management information, wherein the power status of a logical volume is determined based on said power status information of said RAID group LU management table, and wherein said management computer instructs the file server to create the file system according to utilization indicated by said utilization status management information.