I'm running a custom built 4U FreeNAS server, with 16 3.5" and 6 2.5" hot swap bays. Currently I have 80TB of magnetic storage, and 4 TB of solid state storage
I'm using a Xeon 12 Core CPU, with 128Gb of ram. I use for critical files storage with sync to the cloud, Virtual Machines, and a Plex server.