VDI errors but backups are successful
This is just me, but no, I wouldn't ignore an event that said:

SQL 2008 service transitioned from a Normal state to a Failed state at 2018-05-11 09:16:21 


That would be the kind of event I'd pay a little deeper attention to. If you Google for text involved in that error, you get KB articles like 2615182, suggesting that it's a Windows backup failing, not a SQL Server one.