# Unraid vs TrueNAS vs Proxmox: Which Homelab OS Should You Use?

Unraid, TrueNAS Scale, and Proxmox are the three most popular homelab operating systems. Each is the right answer for a different type of builder. Unraid suits people who want flexible NAS storage with easy Docker containers. TrueNAS suits people who want maximum data integrity with ZFS. Proxmox suits people whose primary goal is running virtual machines. Picking the wrong one wastes time on workarounds that should not be necessary.

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> Published: 28 April 2026
> Last updated: 17 October 2026
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**Our Pick: Beelink Mini S12**
The mini PC can be suitable for Proxmox compute workloads, but using it as an Unraid or TrueNAS NAS also requires an appropriate directly attached storage configuration. Start here, confirm whether the exact configuration supports RAM upgrades, and connect your NAS for storage. It's a cleaner architecture than running compute and storage on the same box.
- CPU: Intel N95 (quad-core, up to 3.4GHz)
- RAM: 12GB LPDDR5
- Storage: 500GB SSD, price varies; check the current Amazon Australia listing
[Check Price on Amazon](https://www.amazon.com.au/dp/B0GBTY23WH?tag=ntkit-22)

**The short answer: use Unraid if storage flexibility matters most, TrueNAS Scale if data integrity matters most, and Proxmox if running virtual machines is your primary goal.** All three are mature, actively developed platforms with large communities. The choice between them is not about quality. It is about which platform is optimised for what you actually want to do. Running any of them for a use case it was not designed for is possible but creates unnecessary friction.

> **Note:** In short: Unraid costs $49 USD for Starter, $109 USD for Unleashed, or $249 USD for Lifetime; Starter and Unleashed include one year of updates, with optional paid update extensions thereafter. is best for mixed-drive NAS storage plus Docker containers. TrueNAS Scale (free) is best for ZFS data integrity with uniform drive pools. Proxmox (free) is best for virtual machine and LXC container management. All three can run Docker and VMs, but each has a different primary strength.

## Side-by-Side Comparison

### Unraid vs TrueNAS Scale vs Proxmox VE

| Feature | Unraid | TrueNAS Scale | Proxmox VE |
| --- | --- | --- | --- |
| Cost | From $49 USD one-time | Free (open source) | Free (open source) |
| Primary strength | Flexible NAS storage | ZFS data integrity | VM and container management |
| Storage model | Parity array; mixed drive sizes | ZFS pools; matched drives per vdev | ZFS or LVM; flexible configuration |
| Drive mixing | Yes, data-drive sizes can be mixed, but no data disk may be larger than the smallest parity disk. | Yes, but a vdev is limited to the usable capacity of its smallest drive, so matching sizes is recommended. | Depends on the storage backend; integrated ZFS supports RAIDZ parity, while usable capacity is constrained by the smallest disk in each vdev. |
| Data integrity (bit rot) | Traditional XFS-formatted array data drives do not provide per-block checksums; Unraid storage formatted with ZFS or Btrfs does. | ZFS checksums on all data | ZFS checksums (if using ZFS datasets |
| Docker support | Community Applications plugin | TrueNAS Apps (Helm-based) | LXC containers; Docker inside VM |
| VM support | KVM/QEMU built-in | KVM/QEMU built-in | KVM/QEMU; primary use case |
| NAS shares | SMB and NFS built in; AFP support was removed in Unraid 6.9. | SMB, NFS, iSCSI built-in | Manual configuration required |
| Base OS | Custom Linux (Slackware) | Debian Linux | Debian Linux |
| Learning curve | Moderate | Moderate to steep | Moderate to steep |
| Best use case | Home NAS plus containers | Archive and data integrity | Hypervisor with NAS storage |

## Unraid

Unraid is a paid Linux-based NAS and homelab OS developed by Lime Technology. Its core innovation is the parity array model: data drives operate independently, and one or two parity drives protect against failure. Unlike RAID or ZFS, you can add a 4TB drive next to an 8TB drive and use all available space. No rebuilding, no rethinking. This incremental growth model can make Unraid a practical choice for homelab builders who source drives over time rather than buying a matched set upfront.

The Docker container experience in Unraid is the best available on any NAS platform. The Community Applications (CA) plugin provides a searchable template library with pre-configured settings for Plex, Jellyfin, Home Assistant, Nextcloud, Vaultwarden, and hundreds of other services. Non-technical users can have containers running within minutes. Unraid also supports VMs via KVM/QEMU with GPU passthrough, making it a capable single-box homelab solution for a wide range of workloads.

The main weaknesses are the licence cost (no free alternative within the platform), no per-block data checksums on traditional XFS-formatted array drives; ZFS- or Btrfs-formatted Unraid storage does provide checksum detection, with self-healing dependent on redundancy, and potentially lengthy parity rebuilds, with duration depending on drive capacity, disk speed, system load and array activity.

**Pros**
- Mix any drive sizes in the same array without capacity waste
- Best Docker container management experience on any NAS platform
- Runs on any x86-64 hardware including cheap second-hand servers
- Drive spin-down saves power and reduces noise overnight
- One-time purchase with no subscription renewals
- Strong community and active plugin ecosystem at forums.unraid.net

**Cons**
- Paid licence ($49 USD Starter, $109 USD Unleashed or $249 USD Lifetime) where TrueNAS and Proxmox are free
- ZFS is supported for pools and individual array data devices; checksum-based detection and self-healing depend on the chosen filesystem and redundancy configuration.
- Slower array rebuild after drive failure than ZFS resilver
- USB-GUID licensing remains supported, but Unraid 7.3 and later also support internal boot and TPM-based licensing.
- No official mobile app suite

### Unraid: NTK Score Card (7.2/10)
- **Performance:** 7/10. Performance scales with hardware; solid for NAS, Docker, and moderate VM workloads on appropriate hardware.
- **Value:** 6/10. Licence cost is real friction given free alternatives; value is strong if you exploit drive flexibility or cheap hardware.
- **Software & Features:** 8/10. Community Applications plugin is genuinely excellent; core NAS and Docker experience well-polished for its target audience.
- **Build & Hardware:** 9/10. Unraid remains especially flexible with mixed drive sizes; TrueNAS 24.10 and later can also expand an existing RAIDZ vdev one disk at a time, although each vdev remains limited by its smallest disk.
- **Ease of Use:** 6/10. More configuration than Synology DSM but less complex than Proxmox plus TrueNAS; reasonable middle ground for technical home users.

## TrueNAS Scale

TrueNAS SCALE (now officially called TrueNAS Community Edition) is the Debian Linux-based successor to TrueNAS Core (FreeBSD). Developed by iXsystems, TrueNAS Community Edition is free and open source with no licensed drive-count tier; TrueNAS Enterprise adds licensed enterprise features and support.. It uses ZFS as its storage foundation, which provides the strongest data integrity guarantees of any home NAS platform: checksums on every block of data, automatic scrubbing, silent corruption detection and repair, and snapshots with minimal overhead.

ZFS is the main reason to choose TrueNAS over Unraid. For long-term archive storage, photographs, video projects, or any data where undetected corruption would be catastrophic, ZFS's checksum model is the correct choice. Unraid's parity system protects against drive failure but will not tell you if a file has silently corrupted on a drive that is still working. ZFS will, and it will fix it automatically if you have redundancy configured.

TrueNAS 24.10 and later use a Docker-based TrueNAS Apps backend; Kubernetes and Helm were used by earlier SCALE releases. It is functional but less user-friendly than Unraid's Community Applications plugin. Users who are comfortable with Docker Compose or the TrueNAS Apps configuration system will find it workable. Users who expect a one-click Docker experience comparable to Unraid's CA plugin will find it more complex.

**Pros**
- Free with no licensed drive-count tier; TrueNAS Enterprise adds licensed enterprise features and support.
- ZFS provides the strongest bit rot and data integrity protection available
- Native SMB, NFS, and iSCSI support without plugin installation
- Snapshots and replication built-in for robust local and offsite backup
- Debian Linux base, but TrueNAS is a managed appliance: apt is disabled by default and developer-mode package changes are unsupported.
- ECC RAM is strongly recommended and works correctly with ZFS memory management

**Cons**
- ZFS requires uniform drive sizes within a vdev for efficient capacity use
- TrueNAS 24.10 and later can add one disk at a time to an existing RAIDZ vdev; pools can also be expanded by adding vdevs or replacing all vdev disks with larger drives.
- TrueNAS Apps (Docker-based) is less user-friendly than Unraid's CA plugin
- TrueNAS recommends at least 8GB RAM for basic operation with up to eight drives; additional memory should be sized for drive count and workload rather than using a blanket 1GB-per-TB rule.
- TrueNAS provides per-disk HDD Standby and Advanced Power Management settings, including spin-down options.
- Interface has improved but remains more complex than Unraid for initial setup

### TrueNAS Scale: NTK Score Card (7.2/10)
- **Performance:** 8/10. ZFS I/O performance is excellent on appropriate hardware; RAM requirements are significant but throughput for NAS workloads is top-tier.
- **Value:** 9/10. Genuinely free with no licensed drive-count tier; TrueNAS Enterprise adds licensed enterprise features and support.
- **Software & Features:** 7/10. Core NAS features are excellent; TrueNAS Apps is functional but less polished than Unraid CA; active development trajectory is positive.
- **Build & Hardware:** 6/10. ZFS pool design requires planning; mixed drive sizes are supported but each vdev is limited by its smallest disk, and TrueNAS 24.10 and later can expand an existing RAIDZ vdev one disk at a time.
- **Ease of Use:** 5/10. ZFS concepts (vdevs, stripe width, RAIDZ levels) have a learning curve; setup is more complex than Unraid for first-time homelab builders.

## Proxmox VE

Proxmox Virtual Environment (Proxmox VE) is a free, open source hypervisor built on Debian Linux. It is not a NAS operating system. Proxmox VE does not provide turnkey NAS share management such as SMB configuration, but smartmontools and default smartd-based local-disk monitoring and alerts are included. What it provides is exceptional virtual machine and LXC container management with a mature web interface, enterprise-grade HA clustering support, and a flexible storage backend system that integrates ZFS, Ceph, NFS, and iSCSI.

One Proxmox homelab approach involves running TrueNAS virtualised with direct disk or HBA passthrough, then consuming that storage from other VMs via NFS or SMB. This approach works well but means you are managing two operating systems and accepting the RAM overhead of both. An alternative is running ZFS datasets directly on Proxmox and exposing them over NFS to other VMs, avoiding the virtualisation overhead of TrueNAS.

Proxmox is the right choice when your primary workload is running many virtual machines or LXC containers and NAS storage is a secondary concern. Running Proxmox when you primarily need a NAS adds unnecessary complexity. Running Unraid or TrueNAS when you primarily need to run many VMs misses Proxmox's strength as a dedicated hypervisor.

**Still deciding?: Beelink Mini S12**
Our top pick: Beelink Mini S12.
[Check price](https://www.amazon.com.au/dp/B0GBTY23WH?tag=ntkit-22)

**Pros**
- Free with no feature limits; enterprise features including HA clustering available at no cost
- Best VM and LXC container management of any home hypervisor platform
- Supports ZFS natively; can run ZFS datasets directly without a separate NAS OS
- Flexible storage backends: ZFS, LVM, Ceph, NFS, iSCSI all supported
- Proxmox Backup Server (separate download) provides efficient VM backup with deduplication
- Widely documented; enormous community and enterprise knowledge base

**Cons**
- Not a NAS OS; SMB shares require manual setup or a NAS VM, while smartmontools and default smartd-based monitoring are included for supported local disks.
- Complexity increases when running both Proxmox and TrueNAS; two OSes to manage and update
- No equivalent to Unraid's Community Applications for one-click container deployment
- ZFS memory requirements apply to Proxmox datasets just as to TrueNAS
- Steeper initial learning curve than Unraid for users new to virtualisation concepts
- No drive spin-down or power management equivalent to Unraid's home-focused features

### Proxmox VE: NTK Score Card (7.6/10)
- **Performance:** 9/10. Best VM performance of any home hypervisor; KVM overhead is minimal and LXC containers run near-native speed.
- **Value:** 9/10. Free with no feature limits and no subscription required; enterprise HA and backup features included at zero cost.
- **Software & Features:** 7/10. Excellent hypervisor management; no built-in NAS features; requires additional tooling or a NAS VM for storage management.
- **Build & Hardware:** 8/10. Highly flexible storage backends and VM configuration; more complex initial setup but more powerful when primary use is virtualisation.
- **Ease of Use:** 4/10. Steepest learning curve of the three; assumes familiarity with virtualisation concepts, ZFS, and Linux networking.

## Which Should You Choose?

**Choose Unraid if:** Your primary goal is a home NAS where you add drives over time in different sizes. You want to run Docker containers for services like Plex, Home Assistant, or Jellyfin alongside your storage. You value a polished GUI that handles most configuration without touching a command line. You are comfortable paying the one-time licence cost in exchange for a better user experience than the free alternatives provide for this specific use case.

**Choose TrueNAS Scale if:** Long-term data integrity is your primary concern and you want ZFS checksums on everything. You are building a uniform drive pool with matched drive sizes and do not need to mix and match. You want a completely free solution with no licence cost. You are comfortable with ZFS concepts or willing to learn them.

**Choose Proxmox if:** Your primary goal is running multiple virtual machines and containers, with NAS storage as a secondary function. You want enterprise-grade VM management features at home. You plan to run many different services isolated in separate VMs or LXC containers. You are comfortable managing multiple operating systems and want maximum flexibility at the hypervisor level.

> **Tip:** **Common hybrid approach:** Some homelab builders run Proxmox as the hypervisor and TrueNAS Scale as a VM with disk passthrough, getting the best VM management alongside ZFS data integrity. This adds complexity but is a valid architecture if you need both capabilities. Unraid can handle storage and compute in one OS and also supports ZFS, but its traditional mixed-drive parity array does not provide the same checksum-and-self-healing model as a redundant ZFS pool.

## Frequently Asked Questions

Related reading: our [NAS buyer's guide](/blog/best-nas-australia/), our [Synology vs QNAP comparison](/blog/synology-vs-qnap-australia/), and our [NAS RAID guide](/blog/nas-raid-explained/).

Free tools: [RAID Calculator](/tools/raid-calculator/) and [NAS Sizing Wizard](/tools/nas-sizing-wizard/). No signup required.

Free tools: [RAID Rebuild Time Estimator](/tools/raid-rebuild-estimator/) and [ZFS vDev Calculator](/tools/zfs-vdev-calculator/). No signup required.

Related reading: our [NAS explainer](/blog/what-is-a-nas/).

Choosing an operating system assumes you are building the hardware yourself. If that is still open, [prebuilt NAS vs DIY](/blog/prebuilt-nas-vs-diy/) works through where each one actually makes sense.

Related reading: our [Proxmox as a dedicated NAS OS](/blog/proxmox-as-nas-os/).

**Q: Can I run TrueNAS Scale inside Proxmox?**

Yes, this is a common and well-documented setup. Pass physical drives directly to the TrueNAS VM using PCIe passthrough of the HBA (host bus adapter) or individual disk passthrough. Do not present drives to TrueNAS through Proxmox's virtual disk layer, as this undermines ZFS's ability to interact directly with the drive firmware. Passing through physical disks or an HBA avoids the unsupported virtual-disk storage layer, but TrueNAS does not treat a virtualised deployment as identical to bare metal and warns against using it for regular production or critical-data storage.

**Q: Is Unraid's parity protection as good as ZFS RAIDZ?**

They protect against different failure modes. Unraid parity protects against complete drive failure (one drive with single parity, two with dual parity). ZFS RAIDZ also protects against drive failure but additionally provides per-block checksums that detect and correct silent data corruption on drives that are still working. Traditional XFS-formatted Unraid array drives do not provide per-block checksum detection; ZFS- or Btrfs-formatted Unraid storage can detect checksum errors, with automatic repair dependent on redundancy. For archival storage or any data where silent corruption would be serious, ZFS is the stronger choice.

**Q: Does TrueNAS Scale require ECC RAM?**

ECC RAM is strongly recommended but not required. iXsystems recommends ECC RAM for TrueNAS builds because ZFS relies on RAM integrity for its write operations. Non-ECC RAM corruption can lead to corrupted data being written to the pool in rare circumstances. For home use with reliable non-ECC RAM and regular ZFS scrubs, many builders run TrueNAS successfully. If you have ECC RAM available or are building specifically for data integrity, use it.

**Q: Which platform has the best Plex server experience?**

All three run Plex reliably. The key variable is hardware transcoding. Unraid's Community Applications plugin makes Plex installation straightforward, and Intel Quick Sync hardware transcoding works via GPU passthrough or direct installation. TrueNAS Scale runs Plex via the app system. Proxmox typically runs Plex in an LXC container or VM. For a dedicated Plex server, Unraid on compatible Intel hardware with Quick Sync is a well-documented configuration; hardware-accelerated streaming also requires compatible hardware and an active Plex Pass.

**Q: Can I switch from Unraid to TrueNAS or Proxmox without losing data?**

Switching requires migration rather than an in-place conversion. Switching usually requires configuration migration, but the storage is not always incompatible: TrueNAS and Unraid can import foreign ZFS pools, and Proxmox supports ZFS. Compatibility depends on filesystem, feature flags, encryption and target configuration, so verified backups remain essential. The migration path is: back up all data to an external drive or cloud storage, install the new OS, configure the new storage pool, restore data. This is why choosing the right platform upfront matters. Plan your switch carefully and verify backups before reformatting.

Still deciding? The interactive Homelab OS Selector asks eight short questions and recommends the right platform for your specific build.

**[Open Homelab OS Selector →](https://needtoknowit.com.au/tools/homelab-os-selector/)**