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  • File system virtualization
    Patent number: 9785647
    Abstract: Systems, methods, and media file system virtualization. Exemplary methods may include rendering a sparse file system and creating a block map for the sparse file system. The block map may include a map record for each file record included in the sparse file system. A map record may include extents for blocks associated with a file record, the map record providing a mapping between allocated block sectors for a file record in the sparse file system and corresponding blocks associated with one or more data sources.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: October 10, 2017
    Assignee: Axcient, Inc.
    Inventors: Robert Petri, Vito Caputo