Everything Is Your Own Fault - Downside of virt-manager
Using libvirt and virt-manager does reduce the number of known features that need attention, but it also doesn't offer you any help by providing useful features.
infrastructure (3)
VM mass production with libvirt/virt-manager
It can be tempting to use fancy tools like XEN, VMware or Proxmox - but these tools also come with additional requirements, overhead and quite a large documentation.
Homelab - just a HDD away
Setting up a homelab doesn't require much.
A second hard drive in a PC is enough to start.
After realizing that magnetic HDDs were good enough for our ancestors' servers, I decided to just start with what I have available rather than waiting for the day I'm able to afford my dream - SSD only, dual CPU - server(-farm).
A 1TB HDD in my primary workstation will do - since it will do all the hard work, any notebook will do for administration.