Tracking metadata changes during data copy in a storage system
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United States of America Patent
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Oct 25, 2011
Grant Date -
Apr 1, 2010
app pub date -
Sep 30, 2008
filing date -
Jan 30, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
Embodiments include methods, apparatus, and systems for tracking metadata changes during copying in a storage system. One embodiment includes a method that uses a bitmap and two fences to track changes to metadata while a copy of the metadata is being transferred from a source disk array to a destination disk array.
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