CAPTURING POST-SNAPSHOT QUIESCENCE WRITES IN A LINEAR IMAGE BACKUP CHAIN
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United States of America Patent
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Dec 10, 2015
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Jun 8, 2015
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Capturing post-snapshot quiescence writes in a linear image backup chain. In one example embodiment, a method for capturing post-snapshot quiescence writes in a linear image backup chain may include taking a first snapshot of a source storage at a first point in time using a Volume Shadow Copy Service (VSS), identifying a first set of block positions of blocks that are allocated in the source storage at the first point in time, identifying a second set of block positions of blocks that are written to the first snapshot during post-snapshot quiescence of the first snapshot by the VSS or by one or more VSS writers, resulting in a first quiesced snapshot, copying the blocks in the first set from the first snapshot to a full image backup, and copying the blocks in the second set from the first quiesced snapshot to a first incremental image backup.
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