I have been wanting to try my hand at a Type 1 hypervisor for a while but it was too expensive. I looked at ESXi, but decided that each change of the software meant a world of hurt for the VMs that would be running. I do like to use KVM and have wanted to learn LXC containers, so I decided to change out the Ubuntu Server and go with Proxmox.
I changed the HW for the Proxmox server to have a 1TB SSD, repurposed the 4TB spinner from the Ubuntu Server to use, and reconnected the DVD drive. I did a fresh install from the Proxmox 6.3-1 iso that I downloaded from the site and came up running very quickly. I then added a number of OS isos, including CentOS, Ubuntu, and Fedora. I was able to quickly spin up Ubuntu and start working on the challenge of other VMs and LXCs.
I connected the GUI/SSH port of the Proxmox to my admin vlan and ran the first Ubuntu VM on my Pers vlan. So far so good.