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Proxmox VE can manage KVM and LXC on one physical node, but clustered deployments depend on Corosync quorum, storage topology and node-failure behavior. Multiple nodes in one failure domain do not create real HA.
Proxmox VE uses quorum-based cluster management to keep cluster state consistent. Node and vote design directly affect behavior during network partitions or node loss.
VM/LXC workloads run on compute nodes, cluster state is coordinated through Corosync, and storage can be local ZFS, shared SAN/NFS or Ceph.
Choose storage based on HA, latency, node count and operational capability.
Ceph monitor quorum, OSD disks, network throughput and failure domains must be designed together. Proxmox VE integrates Ceph natively.
Check quorum, storage and VM state before and after maintenance.
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pvecm statuspvesm statusqm listpct listsystemctl --failedceph -s 2>/dev/null || trueNode-failure resilience and recovery from deletion, ransomware or corruption are different problems. Use an independent backup layer.
Proxmox VE is open source, with subscriptions available for enterprise repositories and support.
It can, but quorum and failure scenarios require careful design; a third vote/qdevice can be considered.
No. Local ZFS, NFS/SAN or other storage models may fit depending on workload and HA needs.
Share node count, VM/memory totals, storage and HA goals; we can choose local ZFS, shared storage or Ceph.