Synology vs QNAP vs TrueNAS: Which NAS Platform for a Small Business?
Picking a NAS platform is really picking an operating system and a security posture you’ll live with for 5+ years — the hardware underneath is almost the easy part. Synology, QNAP, and TrueNAS take three different approaches: polished-and-locked-down, powerful-but-exposed, and free-but-DIY. Here’s how they actually compare for a small office picking a first (or replacement) NAS.
Search intent
Someone searching “Synology vs QNAP vs TrueNAS” is choosing a NAS platform for a small business or serious homelab — not shopping a single SKU, but deciding which software ecosystem to commit to before buying hardware.
Quick take
- Want the most polished software and the best track record on ransomware exposure: Synology (DSM)
- Want more raw hardware for the money and don’t mind extra security hygiene: QNAP (QTS)
- Want a free, open-source platform and are comfortable building/ maintaining your own box: TrueNAS (Core or Scale)
The three platforms
Synology (DSM) is the closest thing this space has to “just works.” DSM’s app ecosystem (Drive, Photos, Active Backup, Surveillance Station) covers most small-office needs without touching a terminal, and Synology’s default security posture — SMB1 disabled by default, forced 2FA prompts, auto-block after failed logins — has kept it comparatively less exposed to the mass ransomware campaigns that have hit this category. You pay for that polish in hardware price and in some feature gating (certain apps and drive-compatibility checks are Synology-hardware-only).
QNAP (QTS) ships more CPU, RAM, and expansion for the same price point as comparable Synology units, and QTS’s app store is arguably broader (especially for virtualization and container use). The tradeoff is QNAP’s security track record: QNAP NAS boxes have been the target of multiple ransomware waves aimed specifically at internet-exposed QNAP devices, and QNAP has had to ship emergency advisories in response. Locking a QNAP box down (disable UPnP, don’t expose the admin/File Station ports to the internet, keep QTS and app-store apps patched) is not optional hardening — it’s table stakes.
TrueNAS (Core, FreeBSD-based, or Scale, Linux-based) is free, open-source, and runs on hardware you assemble yourself (or a pre-built iXsystems unit if you want vendor support). You get enterprise-grade ZFS underneath — snapshots, checksumming, scrub-based bit-rot detection — and full control, with no per-app licensing or hardware lock-in. The cost is time: there’s no single polished mobile app or one-click mesh of first-party apps, and you’re the one responsible for the OS updates, drive compatibility research, and troubleshooting that Synology/QNAP bundle into their support contracts.
Security track record: the part that actually matters
This is the dimension most buying guides skip, and it’s the one an IT-ops audience should weight the most:
- Synology: SMB1 off by default since DSM 7, auto-block/account protection on by default, and a comparatively clean record of mass automated ransomware campaigns targeting DSM directly. Synology also publishes and patches CVEs on a predictable cadence.
- QNAP: has been hit by multiple distinct ransomware campaigns targeting internet-exposed devices — most notably the Qlocker campaign, covered under QNAP’s own advisory QSA-21-12. (Two separate, later 2022 ransomware waves against QNAP devices — DeadBolt — were tracked under different advisories; don’t conflate the two if you’re reading QNAP’s advisory index, since the numbering isn’t chronological-obvious.) The practical takeaway is the same regardless of which advisory: never expose QNAP admin interfaces directly to the internet, keep auto-update on, and use a VPN (or the vendor’s own secure-remote-access product) for offsite access instead of port-forwarding.
- TrueNAS: no first-party mobile app or cloud-relay service means a much smaller attack surface exposed to the internet by default — but that’s also because TrueNAS doesn’t offer that convenience at all. Whatever remote-access story you want (VPN, reverse proxy, Tailscale) is on you to build.
Head-to-head at a glance
| Synology (DSM) | QNAP (QTS) | TrueNAS | |
|---|---|---|---|
| Cost | Highest per bay | Mid — more hardware per dollar | Free software; hardware only |
| Software polish | Best | Good, broader app catalog | DIY, no first-party apps |
| Security default posture | Strongest out of the box | Needs manual hardening | Smallest default attack surface (no cloud/app layer) |
| Best for | Non-technical staff managing it | Buyers who want more hardware for the money and will harden it | Admins who want full control and don’t mind maintaining it themselves |
Example builds
Synology: the DS925+ (4-bay, 2.5GbE dual-port networking, expandable via DX525 unit) lists at $639.99 — a reasonable small-office starting point for shared storage plus Active Backup for Business.
QNAP: the TS-464 (4-bay, 2.5GbE, HDMI output for local console use) runs roughly $549 — comparable bay count to the DS925+ for meaningfully less money, assuming you’re willing to do the hardening work above.
TrueNAS: cost is almost entirely the hardware you put it on — a 4-bay chassis + ECC-capable motherboard placeholder is the typical starting point once you’ve decided TrueNAS Scale or Core is the right fit; swap this for a real link once an affiliate program is live.
Which one should you actually pick?
- You want to hand this off to office staff and minimize the chance of a ransomware headline: Synology. The security defaults and support contract do the most work for you.
- You want more hardware for the budget and are willing to actually lock the box down (no admin port exposed to the internet, patches applied promptly): QNAP.
- You want zero licensing cost, full control, and you’re the kind of admin who already reads changelogs before patching: TrueNAS.
- Went with Synology and want to back up servers/VMs onto it, not just store files: see Veeam vs Synology Active Backup vs UrBackup — Active Backup for Business is bundled free with the NAS you just bought.
- Went with Synology and also want to back up your Microsoft 365 mail/files onto it: see Veeam vs Synology Active Backup vs CloudAlly — Active Backup for Microsoft 365 is a separate free package for the same NAS.
Bottom line
All three are legitimate, currently-shipping platforms in production small- business use. The real decision isn’t drive bays or CPU benchmarks — it’s how much you trust the vendor’s default security posture versus how much hardening and maintenance time you’re willing to put in yourself.