Patent ID: 7788229
Filing Date: 2010-08-31
Classification: G06F

Abstract:
1. A storage apparatus having a plurality of storage devices and a magnetic tape drive capable of accessing a magnetic tape cartridge, the storage apparatus managing a plurality of logical volumes to which at least a portion of storage area of the plurality of storage devices are assigned, the logical volumes including a first logical volume for storing original data which are utilized by a host device and a second logical volume for storing the data of a copy of the original data of the first logical volume, and the storage apparatus saving the data of the second logical volume to the magnetic tape cartridge and restoring the saved data to the logical volume, comprising: a logical volume management table for associating and storing first identification information which indicates the first logical volume and second identification information which indicates the second logical volume; a data specification information acceptance section that accepts data specification information for specifying the data of a restoration target; a specification section that specifies the second identification information of the second logical volume constituting a save source of the data specified by the data specification information; a first identification information acquisition section that acquires the first identification information associated with the specified second identification information from the logical volume management table; a reading control section that reads the saved data from the magnetic tape cartridge storing the data of the restoration target by means of the magnetic tape drive; and a first restoration control section that stores the data read from the magnetic tape cartridge to the first logical volume indicated by the acquired first identification information.