Unraid vs TrueNAS Scale in mid-2025: where they converge, where they diverge

Unraid and TrueNAS Scale have been converging for years. By mid-2025 the convergence is far enough along that the “which to pick” decision is meaningfully different from what it was 18 months ago. Both platforms shipped real changes in 2025 — Unraid moved to a subscription model, TrueNAS Scale absorbed the active development focus from Core — and the trade-offs have shifted in both directions.

This piece is from running both platforms across multiple homelab machines through 2024–2025.

The converged picture

Both platforms now offer:

• A web UI that handles 90% of operations
• VM support (KVM-based)
• Container support (Docker for Unraid, Docker/Kubernetes for Scale)
• ZFS as a primary storage option (Unraid added this in 2024)
• Reasonable backup and replication tooling
• Mature app stores for common self-hosted services (Plex, Immich, AdGuard, etc.)

Three years ago each platform had a sharper niche. Today, picking either one for a typical homelab use case will work fine.

Where they actually still diverge

Storage philosophy

The persistent real difference:

Unraid uses its own parity-based storage layout, where each drive can be a different size and parity protects up to two drive failures. You can add drives one at a time. The flexibility is unmatched.

TrueNAS Scale uses ZFS (primarily) with strict vdev topology rules. You can’t mix drive sizes within a vdev. Adding capacity means adding entire vdevs (the recent RAIDZ expansion feature changed this somewhat).

For homelab users with mixed-size existing drives, Unraid is more accommodating. For users building a new pool from matched drives, both work; Scale’s ZFS gives you stronger data-integrity guarantees.

Docker as a first-class citizen

Unraid treats Docker as the default container runtime. The app store is Docker-based. Adding a custom container is a few clicks. The Docker UX is the strongest single feature of Unraid.

TrueNAS Scale prefers Kubernetes (via the K3s integration) for its app store, though Docker works in jails and the recent versions have improved Docker support. For homelab users coming from Docker workflows, Unraid feels more natural.

Subscription pricing model

Unraid moved from a perpetual license to a subscription in 2024. The new licensing means you pay per year for updates (or a one-time lifetime license at a higher cost). The change was unpopular with parts of the community.

TrueNAS Scale is fully free for community use. Enterprise plans exist but the homelab tier is free with no time-limited features.

This is now a real consideration in 2025 — Unraid is no longer “buy once, use forever” software.

Hypervisor maturity

Both run KVM under the hood, but Proxmox VE (covered in our Proxmox review) is the more mature hypervisor in this space. Many homelab users now run Proxmox + TrueNAS as separate boxes (compute + storage), with Unraid as an alternative all-in-one.

Where Unraid wins

• Mixed-drive-size flexibility — fundamentally easier with Unraid’s parity approach than ZFS
• Docker UX — best-in-class container management for homelab use
• Easier first-time experience — fewer storage decisions to get wrong
• Community plugin ecosystem — vibrant, fast-moving, sometimes excellent (Limetech / GUI plugins, Community Apps)

Where TrueNAS Scale wins

• ZFS as primary storage — better data integrity, native snapshots, replication, send/receive
• Free for personal use — no subscription anxiety
• Active development trajectory — iXsystems clearly investing more in Scale than Lime Tech is in Unraid right now
• Stronger enterprise lineage — easier path to growing into a serious storage platform

The honest converged take

For a 2025 homelab build:

• Picking from scratch with matched enterprise drives? TrueNAS Scale. Better long-term storage architecture, free, active development.
• Picking from scratch with a pile of mismatched drives you already own? Unraid. The flexibility is worth the subscription cost.
• Strongly Docker-focused workflow? Unraid. The UX advantage on containers is real.
• Existing platform working fine? Stay put. The migration cost isn’t worth marginal differences.

The honest takeaway: this is no longer a “vs” question for most people. Both platforms work for typical homelab workloads. Pick based on storage philosophy (parity flexibility vs ZFS rigor) and subscription comfort (Unraid wants annual money, Scale doesn’t).

Real homelab architecture trends in 2025

A pattern visible across r/homelab in mid-2025: many heavy users are moving away from “single all-in-one storage + compute box” toward split architectures:

• Compute on Proxmox (cheap mini PC or small server, VMs and containers)
• Storage on TrueNAS Scale (separate box, focused on ZFS, network-mounted for compute)
• Network in between with 2.5GbE or 10GbE links

This pattern leaves both Unraid and “TrueNAS as compute-and-storage” as legacy approaches for users with simpler needs. Worth noting if you’re committing now to a 5-year homelab build.

For the storage decisions, see our ZFS pool design guide. For the hypervisor decision, Proxmox VE review and TrueNAS Scale vs Core. For the quiet, single-box approach that competes with both, Building a quiet homelab server.