http://kb.roonlabs.com/Roon_Optimized_Core_Kit
It’s densely packed with the answer to every question I’ve heard about ROCK and more
This question is answered 3 times on that page, both in regards to backups and to copying files:
It exposes your internal storage and external storage (USB) drives over an SMB share
and
the internal storage is accessible via a network share
and
Internal storage (for music content) WILL be reformatted, so don’t put your music on it and expect it to work… you will need to copy your music to it via the network share exposed, or via Roon drag/drop import
