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.
Comparing daily snapshots I see 100mb+ daily churn (I assume restic diff is pre compression), the borgbase repository space usage chart shows it increasing about 50mb daily.