@fdemello The Roon DB resides on the 1Gb SSD and the separate music files on the big disks. Advantage is that it won't suffer from obsolescence and the files are portable. If you go a Antipodes or Vault, the music files are not that portable or risk adverse. Best go to the Roon site for equipment compatibility.
I went the NAS way from Windows Server and Media Centre, well before the newcomer technologies. I guess it will be what you are most comfortable with. :)