except, to be clear, and maybe I’m misreading your response, one can have a “local disk” (e.g., a USB drive connected directly to the Roon Server on a NUC or Nucleus, etc.) and then many different endpoints that are being fed from that Roon Server with “local disk” attached. NAS vs Local Disk has nothing to do with having multiple endpoints (i.e., distributed audio).
I have a 4TB USB local drive connected to a NUC running ROCK and can stream music to multiple endpoints in my home, either synchronized or different music to different endpoints.