Oncommand event alert for a volume that doesn't exist

[UNBC]

I'm using :
OnCommand Unified Manager
Version 6.3RC1

I have an alert for a volume that doesn't exist on the filer.

Risk - Volume Space Nearly Full
Impact Area - Capacity
Severity - Warning
State - New
Source - c1_889_nas_svm:/sdw_cl_mssql_sql04_userlog_0
Trigger Condition - The nearly full threshold set at 80% is breached. 803.54 GB (80.07%) of 1003.52 GB is used.
Description - Volume near full

However the volume doesn't exist

c1::> vol show -vserver c1_889_nas_svm -volume sdw*
There are no entries matching your query.

If I go to the generated link in the email I get

The volume that you are trying to view cannot be found. Close the dialog box to view all the volumes.

The event fires daily and I'm wondering how I can stop this from alerting.

[UNBC · Accepted solution]

I think I was able to resolve this myself.

sdw signifies a snapdrive created volume from a backup operation.

For the unifiedmanager alerts, I found that I could exclude volumes that contain a string.

I've implemented this and we'll see tomorrow.