Version mapped incremental backups
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United States of America Patent
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Apr 14, 2015
Grant Date -
N/A
app pub date -
Oct 31, 2005
filing date -
Oct 31, 2005
priority date (Note) -
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Abstract
A method to create a version map to represent the data state of a file at a particular point in time when an incremental backup is performed. In one embodiment, a logical memory backup file is created that is known as a cumulative data file. Changes to the cumulative data file according to one embodiment of the present invention include periodically appending copies of data modified since the prior backup. A new version map may be created each time an incremental backup occurs. Locations of both modified and unmodified data in the backup data file are mapped for future reference to the data.
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