We are about to upgrade a NetBackup domain, primarily used for VMware backups, from 18.104.22.168 to 7.7.3.
My question is regarding the nbvcplugin. Do we have to change the nbvcplugin vApp to 7.7.3 at the same time as the upgrade, or can we wait a bit? It is merely a matter of scheduling, someone else will have to make the nbvcplugin change than us.
Would guess that you need to upgrade/change the plugin too as it is depending on functions in Netbackup.
some time ago, I was struggling to find anything about this in docs and/or compatibility matrixes, and I was not successful.
However based on my experience, you can wait with the upgrade - it is similar like with other NetBackup client components, which can be a few versions older that Master/Media server.
Note there is not real "upgrade" of the plugin, there is its replacement with newer version.