At home I have a 2 node Proxmox VE cluster consisting of 2 HP EliteDesk Mini machines, both running with 16 GB RAM and both an NVMe and SATA SSD with ZFS on root (256 GB). It's small enough (physically) and is just enough for my homelab needs specs wise. Proxmox VE has support for clustering. For a cluster (in any sense of the word), you need at least 3 nodes, otherwise there is no quorum. Corosync, the cluster software used by Proxmox, supports an external Quorum device. This is a small piec...
