Using Synology ds215+ running 2 10,000 rpm mirroring drives as file storage.  It is an older system that we keep firmware and software up to date.  Works fine for our office with 3 Lacerte workstation computers and storage of Lacerte clients from 2002- current also .pdf of client materials/organizer from 2004- current.  If I was to do it now I would be using SState drives.