Efficient backup and restore of storage objects in a version set
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United States of America Patent
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Jan 17, 2012
Grant Date -
N/A
app pub date -
Sep 30, 2008
filing date -
Sep 30, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
The version set backup and restore facility responds to a version set backup request by backing up multiple snapshot copies of a storage object concurrently from a storage array to backup storage media. The version set backup and restore facility responds to a version set restore request by restoring a plurality of snapshot copies of the storage object concurrently from the backup storage media to the storage array. The on-tape backup image of the version set includes variable-length extents of data for each of the multiple snapshot copies of the storage object. The variable-length extents of data for each of the snapshot copies of the storage object are grouped together and ordered in the on-tape backup image by increasing or decreasing logical block address.
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