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BACKUP CONTROL DEVICE, BACKUP CONTROL METHOD, DISK ARRAY APPARATUS, AND STORAGE MEDIUM

  • US 20150161009A1
  • Filed: 12/08/2014
  • Published: 06/11/2015
  • Est. Priority Date: 12/11/2013
  • Status: Abandoned Application
First Claim
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1. A backup control device comprising:

  • a backup control unit that, in response to a backup request including a generation number of a snapshot, determines whether a backup to be executed is an initial backup or a differential backup on the basis of volume management information including a backup number capable of identifying the backup and a volume number capable identifying one or more volumes built in a storage apparatus as a backup destination, generates different copy information depending on a result of the determination on the basis of the generation number and difference management information managing the snapshot,determines a necessity or non-necessity of the backup for each of one or more first sector numbers composing an operation volume on the basis of the generated copy information,when the backup is determined to be necessary, requests, on the basis of a first sector number requiring the backup and the generation number, information stored in a sector with the first sector number from a snapshot control unit andrequests the storage apparatus to store the information acquired in response to the request in a sector with a second sector number in the volume corresponding to the first sector number.

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