Method for asynchronous replication of a hierarchically-indexed data store
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United States of America Patent
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Jul 19, 2011
Grant Date -
Oct 9, 2008
app pub date -
May 28, 2008
filing date -
Jul 30, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Changes such as write operations on a replication source comprising a hierarchically-indexed file system and associated data store are tracked and aggregated over a point-in-time image replication interval and communicated to a replication target. The replication target receives the changes, conducts operations to make the changes on a target volume or portion thereof, and conducts a point-in-time image replication operation to synchronize the replication target with the replication source. In the present invention the advantages of replication techniques developed for log-structured file systems are provided to systems with conventional hierarchical file systems. The invention also facilitates maintaining point-in-time retrievable images of a volume or portion thereof on a target volume while reducing the bandwidth and processing burden associated with replication.
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