Patent ID: 8239346
Filing Date: 2012-08-07
Classification: G06F

Abstract:
1. A storage system, comprising: a memory device including a plurality of data areas for storing data of a plurality of files, a plurality of database areas for storing a database including meta information of each of the files, and a plurality of operating system areas for storing an operating system; a host coupled to the memory device via a network for processing data stored in the plurality of data areas as real data according to the operating system and managing meta information stored in the plurality of database areas according the database; and a backup server coupled to the memory device and the host via the network for managing a version of the operating system and the database, commanding the host to perform processing associated with changes to the version of the operating system and the database, and backing up the operating system and the database with a pre-change version as an original version upon changing the version of the operating system and the database, wherein the plurality of database areas includes a pair, the pair including a first database area and a second database area, in the first database area and the second database area, the meta information of each of the files being managed redundantly, wherein, when the version of the operating system and the database is changed to a new version and is to be subsequently returned to the original version, the backup server selects, as one processing, processing based on pair-to-pair meta information copy, wherein, when the backup server selects the processing based on the pair-to-pair meta information copy as the one processing, the backup server restores the original version of the operating system and the database to the first database area and issues a command to the host to copy the new version of the meta information, and the host copies the new version of the meta information to the first database area from the second database area, and wherein the backup server restores the original version of the operating system and the database to the second database area and issues a command to the host to copy of the new version of the meta information, and the host copies the new version of the meta information to the second database area from the first database area.