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NetBackup isn’t cleaning snapshots

Posted on 2014-11-02
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Last Modified: 2014-11-13
NetBackup isn't cleaning snapshots correctly after backups. Looking at the datastore there is over 100 snapshots all very small but none the less there seems to be an issue.
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Question by:Hitesh
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LVL 118
ID: 40418718
This is a common issue with most VMware backup applications that use the vSphere Storage APIs to Backup.

Is it all VMs, some VMs, random times?

You need to manage your Backups and check VMs for snapshots and each and every backup, or set vCenter Alerts to advise you of Snapshots.

On Average, we have 1-2 VMs per day which have a left over snapshot.

It's usually caused because the VM is very active, when the backup job finishes, and therefore it does not complete the snapshot merge and leaves it.

It can also be because the snapshot is very large, or the datastore is slow.
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Author Comment

by:Hitesh
ID: 40422806
Hi Andrew,

Thanks for taking time to answer my question. Wondering if you could help me to outline few steps to setup vCenter Alerts for left over Snapshots and how to delete them manually.

Again many thanks for your answer.

Hitesh
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LVL 118
ID: 40422884
No problems, I can work with you on your Snapshot issue!

Park the vCenter Alerts for the time being, will do that last...

Okay....do you know how to check for a VM, which is in "snapshot mode"?

My EE Article my assist!

HOW TO: VMware Snapshots :- Be Patient
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Author Comment

by:Hitesh
ID: 40436265
New NetBackup version is not leaving any snapshots its just few servers got old traces of snapshots and would like to clean up. Can I do storage vMotion to get rid of old snapshots.
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Accepted Solution

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Andrew Hancock (VMware vExpert / EE MVE) earned 500 total points
ID: 40436278
No, Storage vMotion will not get rid of snapshots.

1, Take a manual Snapshot.

2. Wait 60 seconds

3. Delete the Snapshot

4. Be Patient whilst it deletes!
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Author Comment

by:Hitesh
ID: 40441524
Hi Andrew, Thanks for your help I really appreciate your all efforts. Few points I would like to mentioned before I accept your solutions

1) I did Storage vMotion and it solved the problem at the moment
2) But I will try Snapshot and that's the idea way of getting rid of Zombie Snapshots
3) I found this article to setup Alarm for Zombie Snapshots

http://vmfszone.blogspot.com.au/2013/08/setting-up-custom-alarm-for-virtual.html

But above all I must admit that your help was just fantastic to resolve all issues.

Thanks once again.

Hitesh
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Author Closing Comment

by:Hitesh
ID: 40441526
Andrew is just fantastic...He is real Champion with some very very high level of VM knowledge. God bless him.
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LVL 118
ID: 40441551
As part of your VMware Admin, every day, you should check your VMs.....the quicker you spot it the better!

Thanks for your kinds words...

Andrew
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