I'm currently on a 4 node CE cluster of R710's. Don't have the Xeon specs handy at the moment.
I have the following memory in them:
Kind of strange memory setup, but it's how the chips went in.
I bought a 256GB consumer SSD for each and either RAID0'd a pair of 300GB HDD's, or bought a 1TB laptop drive. It's ugly, but it works.
I have 14 VM's at the moment. It's a mix of house things and experimental things. Plex, Unifi controller, Grafana, Netatmo data collection, Node playground, Chromecast server, Unifi Video, Wink API server(non-functional).
Outside of the Nutanix, I have a Nortel 48 port GE switch, Unifi UAP-AC-LR AP's(2), Unifi cameras(3). I also run a 18TB Unraid server for the bulk storage. The top R710 is a Windows Server I use for running Handbrake. :)
Bonus Grafana dashboard pic at the bottom: