SQL Server - Does a non-"COPY_ONLY" backup break restores?

[VanillaMastermind]

We will be doing a POC with Veeam B&R soon and I want to make sure I have everything lined up for when the time comes.

If I am doing the full backups and SQL Server transaction log backups in Veeam, and someone takes a manual native full SQL Server backup WITHOUT the "COPY_ONLY" switch, will that break my recover-ability? I don't think this would cause any issues since Veeam is not doing true SQL Server differential backups. From my understanding, the COPY_ONLY parameter only exists to not reset the differential base when doing native SQL Server backups.

[alanbolte]

It will definitely break your ability to take additional SQL log backups via Veeam (until the next Veeam incremental backup of the VM), and of course you can't restore from a backup that doesn't exist. I can't think of a reason why you wouldn't be able to restore from earlier SQL log backups, but I haven't tested it.

It won't have any impact on your ability to perform a restore of the entire VM.