Hi @<1547028074090991616:profile|ShaggySwan64>

I'm guessing just copying the data folder with rsync is not the most robust way to do that since there can be writes into mongodb etc.

Yep

Does anyone have experience with something like that?

basically you should just backup the 3 DBs (mongo, redis, elastic) each one based on their own backup workflows. Then just rsync the files server & configuration.