from no reason Commvault training to backup passive node instead of primary..
Answer
Commvault backing up passive node instead of primary node in Always on data base.
Best answer by Scott Reynolds
What type of backup was ran transaction log backup?
A full backup will run from the primary UNLESS copy-only is selected in Java GUI or ‘Offload full backup’ is selected in Command Center.
However, a transaction log backup will run from the backup preference that is set on the AG properties. This is configured in SQL on the properties of the AG.
More info on backup preference setting for MSSQL here:
You can change this to prefer primary if you want tlogs to also run from primary.
This info is noted here:
https://documentation.commvault.com/11.24/expert/18295_always_on_mssql_availability_groups.html
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