Proxmox VE 9 vs Unraid: Which Homelab Hypervisor Wins?

Unraid's 2023 switch to a per-server subscription killed the perpetual license that homelabbers built decades of racks around, and now a growing crowd is asking whether Proxmox VE 9 is worth the move. Short answer: for anyone running real virtual machines, a multi-purpose homelab, or plans to grow, Proxmox VE 9 wins on licensing, storage, and VM flexibility — but Unraid still holds a real edge for a low-drive-count NAS box. Here is exactly where each platform stands and how to migrate off Unraid if you decide to.

Key Takeaways

• Licensing — Proxmox VE 9 is free and open source with no per-server fee; Unraid charges a $99 to $249 per-year subscription per box tied to capacity.
• Storage — Unraid's mixed-capacity parity array forgives adding drives of different sizes; Proxmox's ZFS gives snapshots, compression, and replication but wants uniform drives.
• VMs — Proxmox ships full KVM, LXC containers, GPU passthrough, and live migration out of the box; Unraid's VM support is single-node and bolted on.
• Migration — Unraid's KVM images copy straight into Proxmox and re-register with a couple of CLI calls, so the move is a weekend job rather than a rewrite.

Is Unraid's Subscription Model a Dealbreaker?

Unraid killed its perpetual license in 2023 and moved to annual subscriptions priced by capacity tier. A single server now runs from $99/year for the 1TB tier up to $249/year for 4TB, and every box in your rack bills separately. Add a second server three years later and you pay that fee all over again, compounding each time you scale out.

For a homelab that stays small this may read as a minor line item, but it is the core reason so many people are leaving. Proxmox VE 9 — built on Debian 12 — has no such fee. The software is free and open source, and you can install, run, and cluster it entirely from the community "No Subscription" repository. The paid Proxmox Subscription only unlocks the tested enterprise repository and priority support; it is optional, not a gate.

The honest tradeoff is that the free repo puts update testing and troubleshooting on you. You apply patches manually and dig through the forums when something breaks, whereas the enterprise repo hands you a curated, stable update stream. Most homelabbers treat that as a fine distinction; a few shops genuinely value the tested path and the ticket queue.

One more licensing nuance worth flagging: Unraid's subscription is tied to the storage capacity you declare, not just the hardware. If your array grows past the tier you paid for, you either move up a tier or live with the cap. Proxmox has no capacity gate at all — a 24-drive ZFS pool costs the same as a single-drive test box.

How Does Unraid's Storage Stack Up Against Proxmox?

Unraid builds a single array out of parity and data drives, and it lets you mix drive capacities freely. The parity drives cover the largest data drive in the array, so you can drop in a bigger or smaller disk whenever you want without rebuilding. Idle drives spin down to save power, which is why Unraid has long been a favorite for cold-storage media libraries.

The catch is performance, and it shows up most when reading parity-protected data. To serve that data the array must spin every drive back up and reconstruct across them, so aggregate read speed collapses toward the speed of a single platter. On a real 6-drive Unraid box I ran, a large file spanning parity-protected vdisks topped out in the 100–150 MB/s range no matter how fast the individual drives were rated. Cache pools help, but they add cost and complexity, and writes without a cache are just slow by design.

Proxmox leans on ZFS as its default storage engine, and ZFS trades that drive-by-drive flexibility for a very different set of strengths: native snapshots, zstd compression, checksumming, and clean replication to Proxmox Backup Server. The price you pay is uniformity — in a RAIDZ or mirror pool your usable space is limited by the smallest drive, so a 4TB and an 8TB drive in a mirror only yield 4TB of each. If you want the full 8TB you buy 8TB drives across the board. For those who want thin provisioning without ZFS's RAM appetite, LVM-Thin is a lighter Proxmox option, though it lacks snapshots and compression.

You can bring a Proxmox ZFS pool and SMB/NFS shares online the same way a dedicated NAS would, following a guide like our Proxmox NAS and ZFS pool build. On the command line the pool and dataset look like this:

zpool create -O compression=zstd -O atime=off zfs0 /dev/sdb /dev/sdc
zfs create -o compression=zstd zfs0/data

From there you register /zfs0/data as a Proxmox storage in the GUI and start attaching VM disks to it. The snapshot and compression behavior is automatic, which is where the real savings land — a dataset full of installers and ISOs frequently compresses to under half its raw size.

Where Does Proxmox Win on VMs and GPU Passthrough?

This is where the gap is widest. Proxmox VE 9 is a first-class hypervisor: full KVM virtualization, privileged and unprivileged LXC containers, PCIe passthrough, clustering, and live migration all in one web GUI. Unraid can run VMs too — it sits on KVM and ships VM templates — but even the latest Unraid 7 keeps its VM layer single-node, has no live-migration story, and treats GPU assignment as a manual, config-file affair.

Creating a KVM guest on Proxmox is a few CLI calls:

qm create 200 --name devbox --memory 4096 --cores 4 \
  --cpu x86-64-v2-AES --net0 virtio,bridge=vm100
qm importdisk 200 /mnt/pve/local-zfs/iso/debian.iso local-zfs --format qcow2
qm set 200 --scsi0 local-zfs:200/vm-200-disk-0.qcow2

For a Windows 11 guest you will also want a virtual TPM and Secure Boot enabled, which Proxmox supports natively — a setup like our Secure Boot and TPM 2.0 guide covers exactly that. Unraid can approximate some of it, but you are fighting templates and custom scripts instead of first-party options.

GPU passthrough is where Proxmox really pulls ahead. You enable IOMMU at the kernel level and expose the card directly to the guest:

# /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet amd_iommu=on iommu=pt"

update-grub
reboot

Then expose the device in the VM config:

# /etc/pve/qemu-server/200.conf
hostpci0: 01:00,pcie=1,x-vga=1

With that in place a Windows dev box, a rendering guest, or even a headless compute VM can run with near-metal GPU performance. GPU passthrough on Proxmox is mature enough to handle everything from a single GPU guest to a full desktop VM — the kind of flexibility our macOS-with-GPU-passthrough piece leans on heavily.

The tradeoff is real and you will hit it: a VM that holds a passthrough device cannot be live-migrated, and reassigning the GPU usually means a guest reboot. If you need zero-downtime moves, keep GPU-backed guests pinned to a fixed host.

How to Migrate Off Unraid to Proxmox VE

The good news is that Unraid stores its VMs as standard KVM images under /vms/domains/, so you are not rewriting anything — you are copying and re-registering. Plan the move as a weekend project, not an overnight cutover.

1. Back up first. Copy your Unraid array and any VM images off-box before you touch the hardware. A Proxmox Backup Server job or a plain rsync to an external volume both work.
2. Install the hypervisor. A fresh Proxmox VE 9 install on the target box takes an automated preseed if you want to script it, or the standard installer if you are doing one server.
3. Build storage. Create a ZFS pool for your VMs and data, following a Proxmox NAS and ZFS setup so your SMB/NFS shares land with the right datasets.
4. Import the VMs. Drop the copied KVM images into a local storage and register them:

qm importdisk 200 /mnt/pve/local-zfs/import/devbox.qcow2 local-zfs --format qcow2
qm set 200 --scsi0 local-zfs:200/vm-200-disk-0.qcow2

5. Rebuild networking. Unraid's br0 bridge and Docker networking do not carry over, so recreate your VM bridges and, if you segment your lab, your VLAN or SDN zones.

That last step is where most of the real work sits. If you have been tagging VLANs across bridges and containers on Unraid, translating that into Proxmox's SDN model is worth a proper read — a VLAN-versus-VXLAN comparison will save you a rework later. Once the bridges, storage, and VMs line up, point your apps at the new box and retire Unraid.

Unraid vs Proxmox VE 9: The Head-to-Head

Feature	Unraid	Proxmox VE 9
Licensing	Paid subscription, $99–$249/yr per server	Free and open source; optional paid repo
Storage architecture	Mixed-capacity parity array, drives spin down	ZFS / LVM-Thin / Ceph; snapshots, compression
Clustering / max nodes	Single node, no clustering	Up to 32 nodes per cluster
Live migration	Not available	Yes, for non-passthrough VMs
Containers	Docker via Community Applications	LXC and OCI image containers
VM & GPU flexibility	Single-node, manual GPU assignment	KVM, LXC, mature PCIe passthrough

Conclusion

For a pure, low-drive-count NAS Unraid still earns its keep, but the subscription model plus the single-node, no-migration limits tip most multi-purpose homelabs firmly toward Proxmox VE 9. You trade a few minutes of initial storage setup for a free license, real clustering, and GPU passthrough that Unraid simply cannot match. Start by backing up your array, stand up a Proxmox VE 9 test box, and build a ZFS pool — then migrate one VM at a time until Unraid is ready to power down.