Proxmox VE vs Unraid

Proxmox VE is Debian 13 with a battle-tested virtualization stack on top: QEMU/KVM for full VMs, LXC for lightweight Linux containers, a clean web UI, and a real REST API. Storage is whatever you build under it: ZFS on local disks, LVM-thin, Ceph across nodes, or NFS from another box. Version 9.2 (May 2026) even added dynamic load balancing that live-migrates HA guests to even out cluster load. It is enterprise software that happens to be free, and it behaves like it.

Unraid boots as an appliance. You get a polished web UI, a storage array that accepts whatever drives you have lying around, a built-in Docker engine fed by the Community Apps catalog, and KVM for the occasional VM. Version 7.3 (May 2026) finally added internal boot and TPM-based licensing, so the old USB-stick-as-license-dongle requirement is now optional. It is a product, not a platform, and it is priced like one.

Unraid's parity array is the reason the OS exists. Throw in a 12TB, an 8TB, and two old 4TB drives, and as long as the parity drive is the largest, every terabyte gets used, protected by one or two parity disks. Each data disk carries its own independent filesystem (XFS, Btrfs, or ZFS), so a failure beyond what parity covers only takes out that one disk's files, and idle drives spin down individually, which 24/7 media boxes notice on the power bill.

Proxmox pushes you toward ZFS, and ZFS is simply better engineering: block-level checksums, instant snapshots, send/receive replication, and much faster striped reads and writes. The tax is planning. RAIDZ vdevs want matching drive sizes (mixed sizes get treated as the smallest disk, wasting the difference), and while OpenZFS 2.3 finally allows single-disk RAIDZ expansion, growing a pool is still a decision, not a habit.

The twist is that Unraid does ZFS too, since 6.12, and it is mature in 7.x. A common layout is a parity array of mismatched disks for bulk media plus a mirrored NVMe ZFS pool for appdata and VMs. You give up write speed on the array (writes are gated by the parity disk, roughly single-drive speed), but a media library that reads far more than it writes never feels it.

Proxmox is in a different class as a hypervisor. Live migration, snapshots with memory state, cloud-init templates, PCIe and GPU passthrough, software-defined networking (9.2 added WireGuard and BGP fabrics), and first-party backup through Proxmox Backup Server. LXC containers give you near-metal Linux services with tiny overhead. The gap: Docker is not built in. The standard pattern is a Docker VM or an LXC running the engine, which works fine but is a layer you build and maintain yourself.

Unraid flips that. Docker is native, and Community Apps is the best app store in self-hosting: thousands of maintained templates, so Jellyfin, the arr stack, Immich, or Home Assistant are running in minutes with sane paths and ports pre-filled. Its KVM support is genuinely decent (GPU passthrough for a gaming VM is a well-worn path), but there is no clustering, no live migration, and no HA. One box is the design, not a setting you can change later.

Proxmox VE is free software under the AGPLv3 with zero feature gates: clustering, HA, Ceph, ZFS, and live migration all work without paying anyone. Subscriptions (Community €120, Basic €370, Standard €550, Premium €1,100 per CPU socket per year) buy access to the extra-tested enterprise repo and support tickets. Homelabbers run the no-subscription repo and click past the login nag.

Unraid is paid, one-time: Starter at $49 (capped at 6 attached storage devices), Unleashed at $109 (unlimited devices), Lifetime at $249. Starter and Unleashed include a year of OS updates, then an optional $36-per-year extension. Skip the extension and your install keeps working forever on the version you have, and you may still get patch releases for your minor version. That is fair pricing, but it is still $109 to $249 more than Proxmox.

Proxmox scales until you get bored. Add a second node, then a third for proper quorum, turn on HA, wire up Proxmox Backup Server, drive it all with Terraform or Ansible, and your homelab starts looking like clusters people run in production. That is exactly why it is the better resume builder. The ceiling is your patience, not the feature list.

Unraid tops out at one very good box. That sounds like an insult and is not: most homelabs are one box, and Unraid makes that box need almost no care. The honest failure mode is outgrowing it. Wanting a second node, faster array writes, or infrastructure-as-code means migrating platforms, because there is no growth path past the single machine.