Nondisruptive Backup (epo) Patents (Class 714/E11.126)
  • Saving multiple snapshots without duplicating common blocks to protect the entire contents of a volume
    Patent number: 8190836
    Abstract: An image-based backup backs up one or more snapshots of a volume without duplicating common data blocks. A backup engine receives a request to generate a backup image of a volume. In response to the request, the backup engine generates the backup image including data blocks and metadata describing attributes of the data blocks. The data blocks and the metadata arranged in the backup image in a same order as they were retrieved without imposing any additional ordering constraints on the data blocks and the metadata.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: May 29, 2012
    Assignee: Network Appliance, Inc.
    Inventors: Ling Zheng, Durga M. Arikatla, Vinay Hangud, Stephen Manley, Hsing Yuan