Methods and systems for single instance storage of asset parts
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United States of America Patent
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Mar 27, 2012
Grant Date -
Sep 9, 2010
app pub date -
Feb 23, 2009
filing date -
Feb 23, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and systems are disclosed that relate to single instance storage of asset parts utilizing a back reference count associated with each asset part. Entries in a journal associated with the asset parts reflect the intention to increment or decrement an asset part's back reference count. The journal may be used to maintain an accurate and reliable reference count for asset parts replicated across multiple disk drives in a distributed storage system, where the replication is structured to reduce the risk of data loss in the event of a disk drive failure. The journal entries may comprise generation numbers used to maintain a back reference count associated with an asset part and to verify a back reference count associated with an asset part.
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