As far as I’m aware, Cloudberry Backup supports this, see this article: CloudBerry Backup Now Supports Azure Archival Storage Tier
However they have very odd 1 TB limit (even though they don’t provide storage) in all but the really expensive Ultimate version, so I’m looking at alternatives.
I understand there are certain limitations and some backup features wouldn’t be possible, but I think for certain workloads this would be ideal.
For example I need to backup large amount of photos and videos. The files pretty much never change and I would only ever need to restore them in case of an emergency, so waiting a few hours isn’t going to be a problem from user perspective. So being able to leverage the Archive storage would cut the storage price significantly.