The 7Best NAS Devices in 2026: Synology vs QNAP vs the New Challengers
We tested ten NAS units for eight weeks each — Plex transcoding, ZFS scrubs, 10 GbE saturation, and the new AI-powered photo organisation. Synology still wins overall, but QNAP and UGREEN have closed the gap, and the right NAS now depends more on your software stack than the brand.
10
NAS Tested
7
Made the List
10 GbE
Network Tested
8 wk
Per Unit
OY
Omer YLD
Founder & Editor-in-Chief
Filed May 1, 2026Last tested May 2026Next review quarterly
A NAS in 2026 is not a backup target — it is a private cloud. The household photo library, the Plex media server, the off-site Time Machine, the password vault, the smart-home recordings, the AI photo organiser that does on-device facial recognition: all of it lives on the box in the corner of a closet that you stop thinking about once it's set up. Synology and QNAP have shared the segment for a decade. In 2026 there are real challengers — UGREEN's NASync line genuinely competes on hardware-per-dollar, and TerraMaster's chassis remain the cheapest entry to TrueNAS Scale and Unraid.
We tested ten NAS units across eight weeks each, running real household workloads: a 12 TB Plex library with 4K HEVC content, two daily Time Machine targets, a Docker stack of common self-hosted services, and the vendor's first-party AI photo organiser. Seven made the list. The patterns are clear:
Synology still wins overall, primarily because DSM 7.3 is the most polished NAS operating system in the category and the new AI Photos feature genuinely rivals Google. Reliability across the test was perfect.
QNAP wins for Plex because Intel-based +-series have iGPU hardware transcoding that Synology AMD chips don't. If you serve a 4K HEVC library, this matters more than software polish.
UGREEN is the new value pick. The NASync line ships hardware that QNAP charges $200 more for and Synology charges $300 more for. The software (UGOS) is good enough; not great.
How we tested
Each unit ran as the primary storage server for at least eight weeks. Workloads:
12 TB Plex library with 4K HEVC content; 4 concurrent transcodes under load
The DS923+ remains the right answer for most people who want a NAS that runs the household. DSM 7.3 is the most polished operating system in the segment, the new AI Photos feature does on-device facial recognition and scene labelling that finally rivals Google Photos, and the four-bay capacity covers a typical media library and document store with room.
Also available · B&H · Newegg
Best for Plex
Position 02 of 07
Q
Our Score 9.0 / 10
Excellent
QNAP TS-464
QNAP
Bays 4CPU Intel Celeron N5095RAM
Best Value
Position 03 of 07
U
Our Score 8.5 / 10
Surprising
UGREEN NASync DXP4800 Plus
UGREEN
Bays 4CPU Intel Pentium Gold 8505 (5 cores)
Best for Larger Households
Position 04 of 07
S
Our Score 9.0 / 10
Reliable
Synology DiskStation DS1522+
Synology
Bays 5 (15 with expansion)CPU AMD Ryzen R1600 dual-core
The biggest decision in NAS buying isn't the chassis — it's the operating system. Synology DSM is the most polished, with the deepest mobile apps and the strongest first-party photo and backup tools. QNAP QTS is the most powerful, with the best container story and the most flexible storage. TrueNAS Scale and Unraid turn cheap hardware into a real homelab platform but require comfort with Linux administration. Pick the OS, then buy the hardware that runs it well.
Plex transcoding requires Intel iGPU — or 10 GbE
If you serve a 4K HEVC library to clients that can't direct-play, you need either Intel iGPU hardware transcoding (TS-464, Lockerstor 4 Gen3, F4-424 Pro) or 10 GbE so the client streams the file natively. Synology's AMD-based +-series do not transcode 4K well in 2026 — this hasn't changed in years and is the single biggest gap in their lineup.
Drive selection: WD Red Pro is the safe answer
The Synology drive-compatibility-list controversy has not gone away — newer Synology firmware increasingly restricts third-party drives. WD Red Pro and Seagate IronWolf Pro remain on the compatibility list, are validated for 24/7 NAS workloads, and currently sit at $25–$30 per TB. Avoid SMR drives in any RAID configuration regardless of brand.
The Final WordOur Top Three, If You Have To Pick
You only need to remember three names.
Best Overall
Synology DiskStation DS923+
The most polished NAS software, ECC memory, four-bay flexibility, and the best AI photo experience outside the cloud giants. The right answer for most households.
Intel iGPU hardware transcoding, dual 2.5 GbE, and a PCIe slot for 10 GbE — the right pick for a serious media library.
Methodology & Update Log
Last tested May 2026 · Next quarterly
How we tested
Each NAS was deployed as the primary household storage server for at least eight weeks. Workloads included a 12 TB Plex library with 4K HEVC content, daily Time Machine targets for two laptops, a Docker stack of common self-hosted services (Vaultwarden, Immich, Nextcloud, Jellyfin), and the vendor's first-party photo organiser. We tested hot-swap recovery by pulling a drive mid-write and verifying integrity post-rebuild. Network testing used iperf3 on 10 GbE and 2.5 GbE.
Omer YLD is the founder and editor-in-chief of Technerdo. A software engineer turned tech journalist, he has spent more than a decade building web platforms and dissecting the gadgets, AI tools, and developer workflows that shape modern work. At Technerdo he leads editorial direction, hands-on product testing, and long-form reviews — with a bias toward clear writing, honest verdicts, and tech that earns its place on your desk.
The knock is value-per-CPU. The R1600 is fine for serving and Plex direct-play, but if you have a 4K HEVC library that requires transcoding, the DS923+ will struggle. For everything else — documents, photos, backups, light containers — nothing in 2026 is more reliable.
+What We Liked
Best NAS software in the category (DSM 7.3)
ECC memory standard, up to 32 GB
AI Photos finally good enough to replace Google Photos
Five-year warranty when bought direct
−Quibbles
No 4K HEVC hardware transcoding
Synology's drive compatibility list keeps narrowing
The TS-464 is the right NAS for a serious Plex household. The Intel Celeron N5095's iGPU handles 4K HEVC hardware transcoding cleanly — we sustained four simultaneous 4K transcodes without choking — and the 2.5 GbE pair plus PCIe slot for a 10 GbE card is more network capacity than the DS923+ ships with.
QNAP's QTS software is more powerful than DSM but less polished, and the brand has had two CVE-driven embarrassments in the last 18 months that Synology hasn't. Patch your QNAP. Then enjoy the transcoding headroom.
+What We Liked
Intel iGPU does 4K HEVC transcoding cleanly
Two 2.5 GbE ports standard
PCIe slot for 10 GbE add-on
More container flexibility than DSM
−Quibbles
QTS software polish trails DSM
QNAP security track record requires diligent patching
UGREEN's NAS line was the surprise of 2025, and the DXP4800 Plus is now the price-performance pick. You get a five-core Intel Pentium Gold, 8 GB of DDR5, dual M.2 NVMe slots, and 10 GbE standard for $499 — hardware that would cost $700+ from QNAP or $800+ from Synology.
The trade is software maturity. UGREEN's UGOS is a competent first-generation NAS OS but lacks the depth of DSM and QTS. Container support is solid, the Plex implementation works, and the photo organiser is functional. Power users will miss specific Synology apps (Drive, Note Station, Surveillance Station). If you want the hardware capability and don't need the full Synology ecosystem, this is the buy.
+What We Liked
Five-core Intel CPU and 8 GB DDR5 standard
10 GbE included — not an upgrade
Dual M.2 NVMe slots
$499 is unprecedented for the spec
−Quibbles
UGOS less mature than DSM or QTS
Limited app catalog vs Synology
Long-term security track record still establishing
The DS1522+ is the DS923+ scaled to a five-disk SHR-2 (Synology's RAID-6 equivalent). For households with 30 TB+ of data who want two-disk failure tolerance, this is the right pick: same DSM, same AI Photos, two extra bays, and the option to chain expansion units up to 15 disks.
What you don't get is more CPU. The R1600 is the same chip as the DS923+, so this is more storage, not more compute. Plex transcoding remains a non-starter. Documents, photos, backups, and a household server: excellent.
The Lockerstor 4 Gen3 nails the spec sheet at $649: 10 GbE standard, dual M.2 NVMe for read/write cache or fast tier, eight DDR4 slots out of the box, and Intel C5125 with iGPU for Plex transcoding. ADM (Asustor's OS) is more capable than UGOS but still trails DSM and QTS in polish.
For self-hosters who want the hardware capability and have the patience to assemble their software stack from Docker containers and Asustor App Central, this is the right balance. For non-technical buyers it isn't.
+What We Liked
10 GbE standard, plus dual 2.5 GbE
Intel iGPU for hardware transcoding
8 GB DDR4 standard, 32 GB ceiling
Solid container and Docker support
−Quibbles
ADM software polish trails DSM/QTS
Smaller app catalog
Atom C5125 caps Plex at ~2 simultaneous 4K transcodes
TerraMaster's F4-424 Pro brings genuine 8-core Intel hardware to $499, and the chassis supports up to 32 GB of DDR5 — spec-sheet hardware that would cost twice as much from Synology. The catch is everything else. TUS (TerraMaster's stock OS) is functional but limited; many self-hosters install Unraid or TrueNAS Scale on this hardware instead.
If you're comfortable doing that, the F4-424 Pro becomes one of the best home-server values in 2026. If you wanted a turnkey appliance, take the UGREEN or step up to QNAP.
+What We Liked
Eight-core Intel i3-N305 at $499
Up to 32 GB DDR5
Dual 2.5 GbE included
Easy target for Unraid or TrueNAS Scale
−Quibbles
TUS stock OS is bare-bones
No iGPU for hardware transcoding
Power-user reputation — not for non-technical buyers
The DS224+ is the right first-NAS for households new to self-hosting. Two bays in mirrored SHR-1 give you redundancy on a single failed drive, the J4125 is the slowest Intel chip Synology ships but does manage limited Plex transcoding, and DSM is the easiest-to-administer NAS OS in the segment.
The upgrade path is the constraint: when you outgrow two disks, you'll be replacing the unit, not expanding it. For a first NAS or a small household, that's an acceptable trade. For anyone who already knows they want a media library, skip this and start with the DS923+.
10 GbE NAS connected to a 2.5 GbE client is still bottlenecked at 2.5 GbE. Match your NAS network speed to your fastest client — typically your daily-driver laptop or workstation. The Wi-Fi 7 router roundup covers the upstream side of this equation.
Five-core Intel, 8 GB DDR5, 10 GbE standard, dual M.2 NVMe — hardware that costs $200–$300 more from QNAP or Synology, with software that's good enough.
→May 2026 · Initial publication. Tested all 7 entries against May 2026 firmware revisions; UGREEN's UGOS 1.4 added container parity that earned its inclusion.
Scrub testing against deliberately corrupted blocks
iperf3 throughput on 10 GbE and 2.5 GbE clients
Anything that lost data, corrupted a snapshot, or required vendor support to recover was disqualified.
What to look for in a 2026 NAS
Three decisions, in order:
Pick the OS. DSM (Synology) for polish, QTS (QNAP) for power, UGOS (UGREEN) for value, TrueNAS Scale or Unraid for full homelab capability on cheaper hardware.
Pick the bay count. Two bays for under 8 TB and simple mirroring; four bays for redundancy and expandability; five+ only above 30 TB.
Match networking to your fastest client. 10 GbE NAS plus a 2.5 GbE laptop is still 2.5 GbE in practice.
After those: ECC memory if you can get it, Intel iGPU if you Plex, and stay current on firmware regardless of brand.
Where we landed
The DS923+ is the right answer for most households who want it to work. The TS-464 is the right answer if Plex 4K transcoding is a priority. The UGREEN NASync DXP4800 Plus is the value pick — and the answer for buyers who'd rather have hardware capability than the Synology software ecosystem. The DS1522+ scales the DS923+ pattern up to five bays for households with 30 TB+ of data.
For power users who want raw spec at a low price and are comfortable installing TrueNAS Scale or Unraid themselves, the TerraMaster F4-424 Pro is the platform — eight-core Intel under $500. The Asustor Lockerstor 4 Gen3 hits the middle: 10 GbE standard, Intel iGPU, more capable than UGOS, less polished than DSM.
The DS224+ is the entry-level pick — the right NAS for a first-time household that just wants a backup target plus simple photo storage. Two-bay limits the upgrade path; for anyone who already knows they want a media library, skip this and start at the DS923+.
What's still ahead
Two structural changes through the rest of 2026 will affect this list:
AI features as differentiator. Synology and QNAP both shipped AI photo features this year that rival Google Photos. Expect both to expand into AI document classification and natural-language search. UGREEN and TerraMaster are roughly six months behind.
HDD pricing. Storage drives have been mostly insulated from RAMageddon, but the same hyperscaler demand pressure is starting to lean on enterprise HDD supply. Don't expect 2025 per-TB prices to come back.
If you only have ten minutes: buy the Synology DS923+ unless you Plex 4K (then QNAP TS-464) or unless you want maximum hardware-per-dollar (then UGREEN DXP4800 Plus).
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Best NAS 2026: Synology, QNAP, UGREEN Tested — Technerdo | Technerdo