Maintaining mirror and storage system copies of volumes at multiple remote sites
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United States of America Patent
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Jul 22, 2014
Grant Date -
Mar 29, 2012
app pub date -
Sep 29, 2010
filing date -
Sep 29, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
Provided are a computer program product and system for maintaining mirror and storage system copies of volumes at multiple remote sites. A first server maintains a mirror copy relationship between a first storage system at a first site and a second storage system at a second site. The first server performs a first point-in-time copy operation from the first storage system to a first storage system copy, wherein the data for the first storage system copy is consistent as of the determined point-in-time. The first server transmits a command to a second server to create a point-in-time copy of the second storage system. The second server processes mirror data transferred from the first server as part of the mirror copy relationship to determine when to create a second point-in-time copy. The second server performs the second point-in-time copy operation.
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