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?
Both Synology and qnap makes solid products. Just make sure whatever file system you pick for the NAS that it can do snapshots. Wasabi is better if you are long term archiving, but for backups that churn, BB is way cheaper. LGTM.