[borgbackup] one global repository or one repository per host

[Thomas Waldmann]

> I'm just setting up borg backup on our servers to test with it. We have 
> about 15 servers with about 100GB to backup per server.
> 
> Should I create one repository on the backupserver per host or should I 
> create one global repository and prefix every archive with the hostname?

If you want to take advantage of deduplication AND you do not want to
backup simultaneously AND you can live with cache resyncs happening
regularly and taking some time, then you can store into same repo. Use a
different prefix for the archives (e.g. hostname-date) and be careful to
use that prefix also when pruning.

If above does not apply (or there isn't much inter-server duplication,
use different repos.

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