Copy and Prune issue

Support
#1

Hello, i’ve been using this software successfully for a few years now and i find it great. Recently i’ve overhauled the storages i use (due to not having access to an unlimited GDrive anymore). Now my setup is like this:

  • Nightly backups of everything on a local NAS. Here i plan to never prune.
  • Copy from NAS to B2. Prune keeping the last 2 weeks (last 14 backups essentially).
  • Copy from NAS to an external drive that i keep disconnected (prune as above).

The problem that i didn’t originally see with this setup is that the Copy will of course keep re-adding pruned snapshots to the other two storages. Is there any way i can make this work? Should i use some other arrangement entirely? Thanks for your support.

#2

Backup to b2 from the source, along with backup to nas; or if you want to replicate nas backup to b2 — don’t prune.

Unless you have huge data turnover pruning does not save you much.

#3

I ended up writing a small script that checks the destination storage last rev and prepares a copy command-line with only the newer revisions.
Edit: of course this would not be viable in a multi-user backup environment due to race-conditions, but for my use case it’s good enough.