Why Every Hypervisor Needs Three Votes for High Availability

I posted about Proxmox requiring three nodes for High Availability and got a reply explaining the split-brain problem. It is worth writing up because this is one of the most misunderstood topics in virtualization, especially for anyone running two-server clusters and calling them "HA." The short version: every hypervisor requires three votes to do proper HA. The difference is how each platform…