Rate of change of data using on-the-fly accounting
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United States of America Patent
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Jul 19, 2011
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N/A
app pub date -
Oct 25, 2004
filing date -
Oct 25, 2004
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Abstract
A storage system, such as a file server, creates persistent consistency point images (PCPI) or “snapshots” that are point-in-time representations of the storage system. The storage system uses persistent consistency point images to backup or mirror data. Using data already found in the data block maps associated with these PCPI, the rate of change of data between persistent consistency point images can be determined.
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