Immediate copy target pull of volume data
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United States of America Patent
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Apr 12, 2011
Grant Date -
Jun 26, 2008
app pub date -
Dec 20, 2006
filing date -
Dec 20, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A composite storage server employs a plurality of distributed storage sites including a mount site, a source copy site and one or more copy target sites for executing a storage of volume data within the composite storage server. In operation, an immediate copy target site receives a communication of a source copy complete message from the mount site, the source copy complete message being indicative of the source copy site having a complete copy of the volume data. Based on the source copy complete message, the immediate copy target site pulls the volume data from a peer distributed storage site having a complete copy of the volume data (e.g., the source copy site, the mount site or another copy target site).
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