A dozen or so VMs exist on my network. Everything from my virtual router (PFSense of course), a Plex server, a Nextcloud server, as well as some world domination experiments. Muaahhhh ha ha! Up until the last few months, they have run on a VMware cluster consisting of a pair of Dell Poweredge 2950s that I had absolutely maxed out with 32GB of RAM each and 4 of the best Xeons I could find for that socket. Needless to say these were power hungry beasts, also, outdated.