Going from a RPi4 with 1TB usb ssd to proxmox VM with gen6 i5, 32GB, 4TB NVME in a optiplex micro. Proxmox is currently humbling me as I learn my way through it.

Nice one. I dove into Proxmox early this year. I snagged a used Lenovo ThinkCentre with similar specs. Definitely humbling, but it's brilliant.