Right now I’m creating a nightly restic snapshot of my server on borgbase and on some spare drives, and keeping the snapshots forever. There’s a ton of daily churn in my data though, between databases and logs and other files that don’t constitute ‘real data’ but might be needed to restore the app.
I’m not doing any sort of backup conversion. Borgbase is a website that focuses on hosting borg backups, but they also natively support restic. I chose restic out of convenience for my local backups because it came preinstalled on truenas and figured it made sense to use the same for my cloud backups.