Accessing a storage-side snapshot of a cluster-shared volume
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syneticon-dj
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Published on 2013-10-31T20:23:07Z
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2013/10/31
21:57 UTC
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From time to time I am in the situation where I need to get data back from storage-side snapshots of cluster shared volumes. I suppose I just never figured out a way to do it right, so I always needed to:
- expose the shadow copy as a separate LUN
- offline the original CSV in the cluster
- un-expose the LUN carrying the original CSV
- make sure my cluster nodes have detected the new LUN and no longer list the original one
- add the volume to the list of cluster volumes, promote it to be a CSV
- copy off the data I need
- undo steps 5. - 1. to revert to the original configuration
This is quite tedious and requires downtime for the original volume. Is there a better way to do this without involving a separate host outside of the cluster?
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