TrueNAS vs Unraid
TrueNAS and Unraid overlap: both have a one-click app store, both offer local AI apps and both can use ZFS. Pick TrueNAS if you want it free: Unraid costs from $49. Pick Unraid if you want to mix drives of different sizes and add them one at a time.
TrueNAS or Unraid: which should you pick?
Built from the facts below. Neither is “best” for everyone; it comes down to your drives, budget and how much you want to learn.
Pick TrueNAS if…
- You want it free: Unraid costs from $49
People who care most about data safety and don’t mind learning a few storage terms.
TrueNAS full profilePick Unraid if…
- You want to mix drives of different sizes and add them one at a time
People reusing a pile of different-sized drives who want lots of apps.
Unraid full profileTrueNAS vs Unraid features
| Feature | TrueNAS | Unraid |
|---|---|---|
| Free to useUsable with no licence fee for a normal home setup. | Yes | No |
| One-click app storeInstall apps such as Plex, Jellyfin or Nextcloud from a catalog in the web interface. | Yes | Yes |
| Built-in photo libraryA photo app made by the NAS maker, not just a third-party app you install. | No | No |
| Local AI apps in the storeOllama or another local AI runtime can be installed from the official catalog or a built-in feature. | Yes | Yes |
| Mix drive sizes freelyAdd drives of different sizes over time and use their full capacity. | No | Yes |
| ZFS file systemZFS checks data for silent corruption and supports snapshots. It works best with matching drives and more RAM. | Yes | Yes |
| Runs on a Raspberry PiAn official or documented way to run it on a Raspberry Pi. | No | No |
| PriceOne-time prices in US dollars. | Free | From $49 |
| Minimum RAMAs stated by the maker. | 8 GB | — |
Price, hardware and storage
Only the rows where they differ.
Local AI: hardware matters more than the system
Both answers above depend on your memory and graphics card. See what each kind of hardware can run.
Strengths and trade-offs
TrueNAS
Strengths
- ZFS protects against silent data corruption and makes snapshots easy
- Free, with no drive or user limits
- Large community and very detailed documentation
Trade-offs
- ZFS pools prefer matching drives, so growing storage takes planning
- Needs at least 8 GB of RAM and a separate boot drive
- More settings and storage words to learn than the beginner systems
Unraid
Strengths
- Mix old and new drives of any size and add them one at a time
- Huge community app store, plus virtual machines
- One-time licence; you keep it forever
Trade-offs
- Costs $49–$249; Starter and Unleashed include one year of updates
- Boots from a USB stick by default
- The parity drive must be at least as large as your biggest data drive
TrueNAS vs Unraid: common questions
Is TrueNAS or Unraid better for a home NAS?
It depends on what you need most. Pick TrueNAS if you want it free: Unraid costs from $49. Pick Unraid if you want to mix drives of different sizes and add them one at a time. In short, TrueNAS suits people who care most about data safety and don’t mind learning a few storage terms, and Unraid suits people reusing a pile of different-sized drives who want lots of apps.
Which is cheaper, TrueNAS or Unraid?
TrueNAS costs less to start. TrueNAS: Free. Unraid: $49 Starter (6 drives), $109 Unleashed, $249 Lifetime; 30-day free trial.
Which needs less hardware, TrueNAS or Unraid?
TrueNAS needs: 2-core 64-bit Intel or AMD; RAM: 8 GB; system drive: 16 GB SSD. Unraid needs: Almost any 64-bit Intel or AMD; RAM: Not specified; system drive: USB flash drive (internal boot option since 7.3).
Can TrueNAS and Unraid run AI locally?
TrueNAS: No built-in AI features. Ollama, Open WebUI and vLLM install from the app catalog. Unraid: No built-in AI features. Community templates for Ollama support NVIDIA and AMD GPUs.
Can I mix drive sizes on TrueNAS or Unraid?
Only Unraid lets you mix sizes freely. TrueNAS: OpenZFS pools. The minimum setup is two drives of the same size. Unraid: Array of mixed-size drives with up to two parity drives; ZFS and Btrfs pools are also supported.
Which is easier for beginners, TrueNAS or Unraid?
We rate both intermediate, based on how much a first-time NAS builder has to learn.
More NAS comparisons
Sources, checked October 19, 2026: TrueNAS hardware guide (25.10) · TrueNAS on Wikipedia · endoflife.date: TrueNAS · TrueNAS Apps Market: Ollama · Unraid pricing · What is Unraid? (docs) · Unraid on Wikipedia · Unraid 7.3.3 release notes · Community Apps: Ollama. The level is our judgment of how much a first-time NAS builder has to learn.