Proxmox vs TrueNAS vs Unraid in 2026: I've Used All Three — Here's What Actually Matters

Every comparison of these three platforms ends the same way: "it depends on your use case." That's technically true and completely useless. You're here because you've got a mini PC or a NAS box and you need to pick one operating system to install on it. You want an answer, not a philosophy lecture.

I've run all three in production homelabs. Proxmox on an MS-01 managing VMs and containers. TrueNAS SCALE on a 4-bay NAS serving files over ZFS. Unraid on a mixed-use tower running Plex, Docker, and a Windows VM simultaneously. Each one is good at something specific and mediocre at the rest. The trick is matching the platform to what you're actually building.

Here's the honest breakdown — with actual opinions, not diplomatic hand-waving.

Three Platforms, Three Philosophies

Proxmox VE — The Hypervisor That Happens to Store Data

Price: Free (optional subscriptions from €120/yr/socket)
Core identity: Type-1 hypervisor. KVM VMs + LXC containers. Compute-first.

Proxmox is a virtualization platform. Its entire purpose is running isolated workloads — VMs and containers — on bare metal with minimal overhead. Storage exists to serve those workloads. You can bolt on ZFS, Ceph, NFS, or iSCSI backends, but storage is infrastructure in Proxmox, not the main event.

If you install Proxmox on a mini PC, you're building a compute node that happens to have disks. That's a fundamentally different machine than a NAS. The comparison with ESXi makes more sense than comparing it to NAS platforms — but in the homelab world, people run all three interchangeably, so here we are.

Proxmox 8.3 (the latest stable) improved SDN support and refined the cluster UI. The community grew massively after the ESXi shutdown in 2024 and hasn't slowed down. Documentation, forum answers, and YouTube tutorials are abundant.

TrueNAS SCALE — The Storage Engine That Runs Some Apps

Price: Free (Community Edition)
Core identity: ZFS-native NAS. Storage-first. Apps are secondary.

TrueNAS SCALE is ZFS in a box. Everything revolves around the storage pool — datasets, snapshots, scrubs, replication. The apps layer exists but it's not the reason you install TrueNAS. You install it because you want the most reliable filesystem available on consumer hardware protecting your data.

The big 2026 context: TrueCharts, the community-maintained app catalog that massively expanded TrueNAS's Docker capabilities, imploded in a community dispute and was deprecated. The official app catalog is smaller and more conservative. If you were counting on TrueCharts to turn TrueNAS into a Docker powerhouse, that path is significantly rougher now. TrueNAS still runs Docker containers through its official catalog and via custom deployments, but the plug-and-play ecosystem took a real hit.

For pure NAS duty — file serving, backup targets, media storage — TrueNAS SCALE remains the strongest option. ZFS checksumming, automatic scrubs, and snapshot-based replication are genuinely best-in-class. Nothing else on this list matches it for storage integrity.

Unraid — The Swiss Army Knife

Price: Starter $59 (limited devices) / Unleashed $129 (unlimited) / Lifetime $249
Core identity: Mixed-use platform. Does everything, masters nothing.

Unraid's philosophy is flexibility. Mixed drive sizes in one array. Docker containers with a community app store. KVM VMs with GPU passthrough. A web UI that doesn't require a terminal. It's the platform for people who want one box that does NAS + media server + Docker host + occasional Windows VM, and who don't want to become a Linux sysadmin to maintain it.

Unraid 7.0 brought ZFS support, which was the biggest missing feature for years. You can now create ZFS pools alongside (or instead of) the traditional XFS parity array. That closes the data integrity gap for users who want ZFS checksumming without leaving Unraid's ecosystem.

The cost is real but not punitive. $59 for the Starter license covers most 4-bay NAS builds. $129 for Unleashed makes sense once you're past six storage devices. Compared to Proxmox and TrueNAS (both free), it's an extra expense. Compared to a Synology or QNAP appliance, it's a rounding error.

Where Each Platform Actually Wins

Proxmox Wins: VM and Container Density

Proxmox has the lowest virtualization overhead of the three. It's a type-1 hypervisor running directly on the hardware — no NAS layer, no app management layer, no storage abstraction eating resources between your workloads and the CPU. LXC containers share the host kernel and start in seconds. A Pi-hole container uses 50MB of RAM. On TrueNAS or Unraid, the same service runs in a Docker container inside a VM or a jail, with more overhead at every layer.

If your primary goal is running lots of isolated workloads — VMs for different projects, containers for self-hosted services, maybe a pfSense VM for routing — Proxmox is the right tool. Nothing else on this list matches its compute density on constrained hardware like a 16GB mini PC.

TrueNAS Wins: Storage Integrity and NAS Features

ZFS on TrueNAS isn't a bolt-on. The entire UI, backup system, replication engine, and snapshot management are built around ZFS concepts. Creating datasets, scheduling scrubs, setting up replication to a remote TrueNAS box, configuring SMB shares with per-dataset permissions — it's all native and well-tested.

Proxmox can run ZFS, but managing shares, permissions, and NAS features requires manual configuration through the CLI. Unraid 7.0 added ZFS pools, but the integration is newer and less mature than TrueNAS's decade of ZFS development. If your machine's primary job is storing and serving files with maximum data integrity, TrueNAS earns its position.

Unraid Wins: Ease of Use and Mixed Workloads

Unraid's Community Applications plugin is the largest self-hosted app ecosystem with a point-and-click interface. Installing Plex, Nextcloud, Home Assistant, or Immich is a five-minute affair — search for the app, click install, fill in a few paths, done. No Docker Compose files, no CLI, no YAML editing.

The mixed drive support is the other killer feature. Got a 4TB drive from three years ago and an 8TB drive you bought last week? Unraid doesn't care. They both go in the array as long as the parity drive is the largest. Try mixing drive sizes in a ZFS mirror or a Proxmox ZFS pool — it doesn't work without wasting capacity. For homelabbers who accumulate drives over time rather than buying matched sets, this flexibility is genuinely valuable.

GPU passthrough to Docker containers or VMs works through the web UI without manually editing config files. For a Plex or Jellyfin setup with hardware transcoding, Unraid makes the GPU passthrough process significantly less painful than Proxmox's manual IOMMU group configuration.

Where Each Platform Falls Short

Proxmox: It's Not a NAS

Proxmox can serve files. You can set up Samba, NFS, or a TrueNAS VM inside Proxmox. But native NAS features — share management, user permissions UI, snapshot browsing for end users — don't exist in the Proxmox web interface. You're building that yourself with CLI tools. For pure storage duty, Proxmox is the wrong tool. It's like using a tablesaw to cut a sandwich — technically possible, wrong tool for the job.

TrueNAS: The App Ecosystem Took a Hit

The TrueCharts deprecation in 2025 was a genuine setback. TrueCharts maintained hundreds of Helm charts that made TrueNAS SCALE a viable Docker platform. Without it, the official app catalog is smaller, more conservative, and updates less frequently. You can still deploy custom Docker containers, but the "browse and click" experience that Unraid offers is no longer matched by TrueNAS.

VM support exists but it's clearly secondary. TrueNAS VMs work, but the management interface is basic compared to Proxmox's full-featured VM lifecycle tools. No LXC containers, no snapshots with the same granularity, no live migration. If you need serious compute workloads alongside your NAS, you're fighting the platform's priorities.

Unraid: It Costs Money and Parity Is Slow

The license cost is the obvious one. $59–$249 when the competition is free. For many homelabbers that's not a dealbreaker, but it's a real difference.

The bigger issue is write performance. Unraid's parity system calculates parity in real-time during writes, which makes sustained write speeds significantly slower than a ZFS pool or a Proxmox LVM volume. The cache pool mitigates this (writes land on fast SSD cache, then mover transfers to array during off-hours), but the underlying array is not fast. For a media server that's mostly reading, this doesn't matter. For a build server or a VM host that writes constantly, it's a genuine bottleneck.

Unraid 7.0's ZFS support helps if you create ZFS pools instead of using the parity array, but at that point you're not really using Unraid's signature feature.

The Two-Box Answer Nobody Wants to Hear

The real answer for a lot of homelabbers is: run two of them. Proxmox on a compute node for VMs and containers. TrueNAS on a separate NAS box for storage. The NAS serves files over NFS or SMB to the Proxmox VMs. Each machine does what it's best at and neither platform is forced into a role it wasn't designed for.

An MS-01 running Proxmox at 27W idle plus a 4-bay NAS box running TrueNAS at 15W idle is 42W combined — less than a single used Dell server. Two machines, two purposes, zero compromise. If your budget allows it, this is the configuration I'd recommend for a serious homelab.

But if you can only have one box, pick based on the primary job. Not the secondary one.

Who Should Use What

Use Proxmox VE if:

• VMs and containers are your primary workload — running isolated environments, self-hosted services, network VMs
• You want the skills that transfer directly to enterprise infrastructure jobs
• You're comfortable with the Linux CLI and don't need a NAS-specific UI
• You want the lowest overhead hypervisor for a mini PC with limited RAM
• Read our Proxmox setup guide to get started

Use TrueNAS SCALE if:

• Storage is the primary job — file serving, backup targets, media libraries
• ZFS data integrity matters more to you than running lots of apps
• You want snapshot-based replication to an offsite backup
• You're building a dedicated NAS and don't need heavy compute on the same box

Use Unraid if:

• You want one box that does NAS + media server + Docker apps + occasional VM
• You have mixed drive sizes and don't want to waste capacity matching them
• You prefer a point-and-click interface and a strong community app ecosystem
• The $59–$129 license cost doesn't bother you and you value simplicity over cost
• You want GPU passthrough for Plex/Jellyfin transcoding without fighting config files

The Verdict — An Actual Opinion

For a first homelab focused on learning and running services: Proxmox. It's free, it teaches real infrastructure skills, and LXC containers give you the best workload density on limited hardware. The setup takes under an hour.

For a dedicated NAS where data integrity is the entire point: TrueNAS SCALE. Nothing else matches its ZFS integration. Accept that the app ecosystem took a hit and use it for what it's best at — storing your data safely.

For a single box that does everything with the least friction: Unraid. The license costs money. The parity writes are slow. The app ecosystem is the biggest and easiest to use. If you want one machine in a closet that serves media, runs Docker containers, backs up your photos, and occasionally hosts a Windows VM for gaming — and you don't want to become a sysadmin to maintain it — Unraid is the honest answer.

None of these is the wrong choice. But they are different tools, and pretending they're interchangeable is how you end up rebuilding your homelab six months in. Pick the one that matches the primary job. Not the one that matches what Reddit told you was cool this month.