Is it reasonable to use Borg at scale, backing up many servers to one repository? I'm afraid the need to rebuild the local cache is a blocker for this use case.

I may be way off base with this suggestion, but could the local cache be configured to store only the checksums from the local server? Sure, the servers may send some files to the repository that have already been hashed elsewhere, but no rebuilding would be required (not to mention lower space requirements for the local cache).

💰 there is a bounty for this