Finally getting back around to setting up Proxmox to take over for the heavy-handed (and slightly expensive) vSphere VM/container hosting on my NUC cluster.
TIL that while vSphere/ESXi is fine running the OS off of a thumb drive, Proxmox very much isn't.
Made a "quick" trip to Microcenter to pick up some cheap NVMe drives and external enclosures (internal M.2 and SATA slots are being used for the Ceph cluster).