This is weirdly trickier than it seems, or should be.
What I mean by this is:
We enable default Shadow Copy backup settings on server volumes, letting it run at the default 7am and 12pm. Other backups on the servers are running, of course, but this is a first level convenience for when people accidentally delete a file/folder, and useful against a share getting crypto'd.
But occasionally I have seen it where the Shadow Copy volume setup just stops, for no apparent reason. Over the years I've been checking in manually to confirm it's running and I can see twice-daily backups, but it would be much better to automate this in some way.
Unfortunately it doesn't look like Event IDs are anything to go with. System logs mentioning the VSS service (7036) happen all the time. And while I found a number of good Event IDs in the Application logs (between 2001 and 2006) showing starting and successful completion of Shadow copy instances, these trigger for things like Windows Server Backup, and don't trigger for the 7am/12pm automatic Shadow Copy saves.
I assume there is a way to make this happen with complex scripting, but that's outside my wheelhouse, and through searches I haven't been able to find exactly what I'm looking for. Optimally something that can run as a scheduled task, check and log what "previous versions" exist, and send an email if it doesn't see any that should exist within the past 24-48 hours.
Does anyone have any ideas? Or know of a software tool that does explicitly monitor and inform about this?