I would like the end result to include remote and encrypted backups.
I’m considering maybe a Synology NAS with an APFS partition for Time Machine and a BTRFS partition for Linux backups.
The Linux laptops might backup to the NAS with Restic.
The Synology NAS might then backup to BackBlaze or another cloud using Synology’s Hyper Backup or also Restic.
Have I missed a better plan?
For what it’s worth, Time Machine doesn’t seem to care as much which file system it goes to anymore, as long as it goes over SMB.
There are specific config settings to make it work , but nearly all servers , including synology, will have a button that does whatever the magic combo is.