The scenario
A two-node Proxmox VE cluster requires a separate, redundant Corosync network to avoid split-brain and an external QDevice for quorum.
What is in this drawing
Read the decisions behind it.
01
Redundant ring switches for Corosync traffic
02
External QDevice to break ties in 2-node quorum
03
Shared storage reachable from both nodes
Reuse for any 2-node Proxmox VE cluster diagrams where split-brain prevention and quorum design matter.
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