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Forum Discussion
VMWare Datastore Snapshots and Corruptions
Hello all,
Running into some issues on an inherited environment. We have a RR4312 with dual expansion modules as an NFS datastore for 3 VMWare Hosts. We are experiencing occasional virtual server corruptions and trying to understand why.
A brief overview of our shares:
Shares are NFS, RAID10 with Daily Snapshots and Backup Jobs pointing to a second ReadyNAS.
Performance graph of Volume Operations per second show what appears to be a complete drop in IOPs about 3 times an hour, lasting no more than a minute.
In the past I have never relied on snapshots and backups of the live datastore from the ReadyNAS directly (unless it's integrated such as EMC, NetApp etc). I am implementing a VCenter-integrated backup solution and thinking we should probably stop the native snapshots and backups on the ReadyNAS...
Thoughts?
3 Replies
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Forgot to mention we also have Disk Check and Defrag on each volume scheduled monthly.
The main effect of keeping snapshots on is that it will increase fragmentation (and of course the overall storage requirements as the snapshot space builds). Perhaps try turning them off for a bit, and see if there is any change in your main issue. You can always re-enable them.
As far as backups go, the need for them depends on your overall backup plan.
Thank you Stephen, I am used to using VCenter-Integrated backup solutions (Veeam, Acronis, Unitrends, DATTO etc) so this is "someone else's" plan which I am now taking responsibility for. I have no concerns justifying the need for a proper backup solution, but I've read conflicting information on running ReadyNAS snapshots on live VMWare datastores... As you can imagine stopping the corruptions is a high priority and we may have no option other than to try disabling them.
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