This server is exactly what was promised.  Nice tower design for expandability and windows 10 preinstalled.  I will be putting a second drive in and mirroring in order to provide storage redundancy using windows 10 mirroring.  Already works well as both a home network file server and as a Plex media server.  Much cheaper and more flexible than the other solutions I looked at (home NAS server).  I strongly recommend this server.