Engineering capabilities
- Cluster and quorum design
- ZFS / Ceph storage layout
- Container and VM workloads
- Snapshot strategy
Cloud & Virtualization
Proxmox VE
Open-source virtualization with KVM and LXC, clustering and integrated backup for cost-aware estates.
Security & hardening
- Two-factor administrative access
- Firewall policy per node and VM
- Separated backup credentials
Proxmox VE cluster architecture
Proxmox delivers clustering, KVM/LXC workloads and integrated backup on commodity hardware u2014 provided quorum, storage and network design are correct from day one.
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01
Cluster & quorum
- Node 1
- Node 2
- Node 3 / QDevice
Odd quorum count so the cluster survives a node loss without split-brain; corosync on a dedicated link.
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02
Storage
- ZFS local pools
- Ceph pool (scale-out)
- NFS / iSCSI target
ZFS for single-node integrity and snapshots; Ceph where shared, self-healing storage is required.
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03
Networking
- Linux bridge / VLAN aware
- Bonded uplinks
- Cluster + storage networks
Cluster, storage and guest traffic separated so replication cannot starve production traffic.
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04
Workloads
- KVM virtual machines
- LXC containers
- HA groups
Containers for lightweight services, VMs where full isolation or unusual kernels are needed.
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05
Backup
- Proxmox Backup Server
- Offsite sync
- Restore verification
Deduplicated incremental backups with pruning, plus scheduled restore tests.
Frequently asked questions
Is a two-node Proxmox cluster safe?
Only with a QDevice acting as a third vote. Two nodes alone cannot form quorum reliably after a failure, which is a common cause of unexpected cluster lockups.
ZFS or Ceph?
ZFS for small clusters and strong local data integrity with snapshots and replication. Ceph when you need shared storage across nodes with self-healing and horizontal scale u2014 it requires more nodes, more network and more operational maturity.
How does Proxmox compare on cost?
There is no per-socket licence for the software; the paid element is an optional enterprise repository subscription. The real comparison is total operational cost, including your team's familiarity with the platform.
Can we migrate from VMware to Proxmox?
Yes. Disks are converted or imported per VM, guest tooling is swapped, and workloads are moved in waves with rollback available until each wave is validated.
Scope the work before you commit budget
Send the environment details and get an engineered proposal with assumptions, risks and a rollback path.