Method and system of producing a full backup image using an incremental backup method
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United States of America Patent
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Sep 2, 2014
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app pub date -
Nov 19, 2010
filing date -
Nov 19, 2010
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Abstract
A system, method, and medium for performing incremental backups of a data set within a deduplication storage system. An incremental backup of a data set is initiated, and the changed data items of the data set are deduplicated. An extents catalog is created to fully describe the data set. References associated with the unchanged data items of the data set are retrieved from the extents catalog and then sent to a deduplication engine. The deduplication engine uses the references to retrieve fingerprints associated with the unchanged data items from a previous reference map. Then, the deduplication engine creates a new reference map for the incremental backup and stores the newly generated and retrieved fingerprints in the new reference map.
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