@Prilly Looks like @lawrencesystems has a good explainer video on YouTube at https://youtu.be/weVoKm8kDb4?si=QH93rOKaXLglrIbS Check it out when you get a chance, thanks.

What latency are you referring to?

This is absolutely something to write about in the release note of 8.3. Agreed, this should be in the release notes. I'll add it. It's now in the release notes: https://docs.xcp-ng.org/releases/release-8-3/#pool-metadata-backup-temporarily-unavailable-from-console

No, there is none. You should have no problem using the Debian 10 template for any VM.