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Individual file restore from block-level incremental backups by using client-server backup protocol

  • US 8,200,638 B1
  • Filed: 02/24/2009
  • Issued: 06/12/2012
  • Est. Priority Date: 04/30/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving at a network storage server, from a backup client, a request identifying a particular file to be restored from a block-level backup set of a data set that contains a plurality of files; and

    restoring the file from the block-level backup set at the network storage server by using a client-server backup protocol, without restoring the entire data set from the backup set, wherein restoring the file from the backup set includesusing a first backup image in the backup set, at the network storage server; and

    in response to a determination at the network storage server that a second backup image in the backup set is needed to continue restoration of the file, automatically suspending restoration of the file and sending a request for the backup client to change from the first backup image to the second backup image, from the storage server to the backup client.

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