"A home lab is where curiosity turns into expertise."
My current home lab setup is 3 Dell Optiplex 7040's that are in a cluster running ProxMox as a hypervisor. This setup has allowed me to virtualize a number of servers for both testing and development purposes. Each Optiplex has at least 64GB of RAM, and the entire system is connected via a dedicated gigabit network. I am currently running a combination of Ubuntu Server, Windows Server, and pfSense virtual machines. The setup provides a lot of flexibility and has helped me understand the intricacies of virtualization and network management.
Currently in the process of setting up/testing the following.
Proxmox is the most used hypervisor in the Home Lab space, offering extensive support.
Proxmox Hypervisor
If you have any questions, feel free to email me.