I've been using Plex Media Server (on FreeBSD of course) for several years. I had even signed up for the premium product... Plex Pass to support their work. Sadly a lot has changed in the past few years regarding Plex, and not all of it good. For about a year or two, it's no longer possible to even manage your server without signing into a Plex Account.
GlusterFS (GFS) is the open source equivalent to Microsoft's Distributed Filesystem (DFS). It's a service that replicates the contents of a filesystem in real time from one server to another. Clients connect to any server and changes made to a file will replicate automatically. It's similar to something like rsync or syncthing, but much more automatic and transparent. A FreeBSD port has been available since v3.4, and (as of this post) is currently at version 8.0 with 9.0 being released soon.
This is a technology demonstration and tutorial for deploying GlusterFS on FreeBSD. As a bonus this is an opportunity to play with Bhyve.