I see many posts asking about what other lemmings are hosting, but I’m curious about your backups.
I’m using duplicity myself, but I’m considering switching to borgbackup when 2.0 is stable. I’ve had some problems with duplicity. Mainly the initial sync took incredibly long and once a few directories got corrupted (could not get decrypted by gpg anymore).
I run a daily incremental backup and send the encrypted diffs to a cloud storage box. I also use SyncThing to share some files between my phone and other devices, so those get picked up by duplicity on those devices.
All nextcloud data gets mirrored with rsync to a second drive, so it’s in 3 places, original source and twice on the server
Databases are backed up nightly by webmin to second drive
Then installations, databases etc are sent to backblaze storage with duplicati