Buying & comparison
Synology vs UGREEN vs DIY NAS in 2026
A spec-verified, source-backed comparison of a Synology DSM box, a UGREEN NASync, and a DIY mini-PC NAS — and how to choose the right one for your home.
Who this is for
Three honest paths lead to a home NAS in 2026, and they trade off differently: a Synology runs the most polished software but locks you into more of its ecosystem; a UGREEN NASync gives you far more hardware and open drive choice for the money but younger software; a DIY mini-PC running TrueNAS or Unraid gives you the most control and the lowest cost per terabyte but makes you your own support desk. This guide compares one representative model from each camp, with every spec sourced and labeled, then helps you pick by what you actually need. Size the decision with the capacity, backup, and UPS calculators, and start from our NAS runbooks for the operating side.
Bottom line
There is no single winner — there is a winner for you. Buy Synology if you want the least-hassle software and the deepest app ecosystem and you'll buy drives off its list. Buy UGREEN if you want the most CPU, RAM headroom, and 10GbE for the money and you want to use any drive you already own. Build DIY if you want maximum control, ZFS integrity or mixed-size drives, and the lowest cost per terabyte — and you accept that you are the integrator and the support line.
How to choose
- Software maturity vs raw hardware
- Synology DSM is the most complete, integrated NAS OS — Hyper Backup, Synology Photos, Surveillance Station, Container Manager. UGREEN's UGOS Pro is improving but still less deep. DIY (TrueNAS/Unraid) is powerful but you assemble the experience. If you want it to 'just work,' weight software; if you want specs-per-dollar, weight hardware.
- Drive freedom (the 2025 Synology story)
- Synology's 2025 Plus models tightened drive compatibility; DSM 7.3 (Oct 2025) walked it back for SATA HDDs and 2.5" SATA SSDs, but M.2 NVMe pools/cache still require Synology's compatibility list, and it only 'guarantees full functionality' on listed drives. UGREEN and DIY are open to any WD/Seagate/Toshiba drive. If you have drives already, this matters.
- Capacity and room to grow
- Match bays to your real data plus headroom, then check the growth ceiling: Synology DS925+ expands to 9 bays via a DX525; the larger DS1825+ adds a PCIe slot; UGREEN sells 2/4/6/8-bay models; DIY is bounded by your board's SATA/PCIe. Run the capacity planner before you buy drives.
- Data integrity (ECC + ZFS)
- The Synology DS925+ ships ECC RAM; most UGREEN and N-series mini-PC builds are non-ECC. If bit-rot protection matters, that points to ECC plus a checksumming filesystem (Synology Btrfs snapshots, or ZFS on TrueNAS). The N-series mini-PC's 16 GB non-ECC ceiling is the honest limit of cheap DIY ZFS.
- Network speed
- If you move large files or edit over the network, 10GbE matters. The UGREEN DXP4800 Plus includes 10GbE; the Synology DS925+ tops out at 2.5GbE (you'd step up to the DS1825+ and add a card for 10GbE); DIY depends on your board or add-in NIC.
- Who supports it when it breaks
- A turnkey NAS (Synology, UGREEN) is one vendor's hardware + OS + warranty + a single support line. DIY makes you the integrator and the support desk — there is no number to call when a build won't POST or a pool degrades. Be honest about how much of that you want to own.
The options
One representative model per platform is compared below; each vendor sells a full range (Synology DS225+ → DS1825+, UGREEN DXP2800 → DXP8800 Plus, and DIY from an N100 to an 8-core N305 build). The full ranges and step-up points are covered in How to choose and the FAQ.
Synology DS925+
SynologyThe default 'serious home / prosumer' 4-bay and the natural successor to the popular DS920+/DS923+ — AMD Ryzen with ECC RAM, dual NVMe, and the most polished NAS software there is.
Best for
Operators who value DSM's integrated apps (Hyper Backup, Synology Photos, Surveillance Station, Container Manager) and want ECC data integrity, with room to grow to 9 bays — and who will buy from Synology's drive compatibility list.
Watch-outs
No 10GbE option at all (two fixed 2.5GbE ports, no PCIe slot) — step up to the DS1825+ for 10GbE. M.2 NVMe pools/cache still require drives on Synology's compatibility list even under DSM 7.3. The Ryzen V1500B is the same chip as the prior generation, so the uplift over a DS923+ is 2.5GbE and refinement, not raw compute.
| Spec | Value | Verification |
|---|---|---|
| Bays | 4 × 3.5"/2.5" SATA + 2 × M.2 2280 NVMe; expandable to 9 bays with a DX525 | Manufacturer-confirmedsource |
| CPU | AMD Ryzen V1500B — 4 cores / 8 threads, 2.2 GHz | Manufacturer-confirmedsource |
| RAM (stock / max) | 4 GB DDR4 ECC SODIMM stock; max 32 GB (2 × 16 GB) — ECC | Manufacturer-confirmedsource |
| Network | 2 × 2.5GbE RJ-45 (no PCIe slot, no 10GbE option); USB-C expansion port for the DX525 | Manufacturer-confirmedsource |
| Max raw capacity | 80 TB internal (4 × 20 TB); up to 180 TB with a DX525 | Manufacturer-confirmedsource |
| Drive compatibility policy | 2025 policy: under DSM 7.3, third-party SATA HDDs and 2.5" SATA SSDs are supported for install + pool creation; M.2 NVMe pools/cache still require listed drives. Full functionality 'guaranteed' only on compatible drives. | Manufacturer-confirmedsource |
UGREEN NASync DXP4800 Plus
UGREENThe value flagship of the NASync line — a Pentium-class x86 chip with a built-in 10GbE port and open drive compatibility, at the price/performance sweet spot.
Best for
Operators who want real 10GbE throughput, four bays plus dual NVMe, room to grow RAM to 64 GB, and the freedom to use any WD/Seagate/Toshiba drive — for media, Docker/VMs, surveillance, and backups in one box.
Watch-outs
UGOS Pro is capable but still less mature than Synology DSM in app depth and ecosystem. The Pentium Gold 8505 is strong for the tier but a step below the Core i5 in the 6800 Pro/8800 Plus, and this model has no Thunderbolt. Because it's standard x86, you can wipe UGOS for TrueNAS/Unraid — but that's unofficial and drops UGREEN's app suite and support.
| Spec | Value | Verification |
|---|---|---|
| Bays | 4 × SATA + 2 × M.2 NVMe SSD slots | Manufacturer-confirmedsource |
| CPU | Intel Pentium Gold 8505 (12th Gen) — 5 cores / 6 threads, up to 4.4 GHz | Manufacturer-confirmedsource |
| RAM (stock / max) | 8 GB DDR5 stock; expandable to 64 GB DDR5 (non-ECC) | Manufacturer-confirmedsource |
| Network | 1 × 10GbE + 1 × 2.5GbE (both RJ-45) | Manufacturer-confirmedsource |
| Operating system | UGOS Pro (UGREEN's own OS); the x86 hardware also unofficially runs TrueNAS/Unraid | Manufacturer-confirmedsource |
| Drive compatibility policy | Open / any-drive — UGREEN advertises broad third-party compatibility (WD, Seagate, Toshiba, and more); its list is advisory, not enforced. No vendor lock-in. | Manufacturer-confirmedsource |
DIY: mini-PC + TrueNAS or Unraid
DIY / open sourceThe build-it path: a low-power Intel N-series mini-PC (or a custom board) running free TrueNAS Community Edition for ZFS integrity, or Unraid for a mixed-size-drive parity array and a great Docker/VM app server.
Best for
Operators who want open hardware, any-brand drives, the lowest cost per terabyte, and either ZFS data integrity (TrueNAS) or the ability to grow an array one any-size disk at a time (Unraid) — and who are comfortable owning the integration.
Watch-outs
The N-series mini-PC's 16 GB non-ECC, single-channel memory ceiling is the real limiter — ZFS prefers more RAM and ECC. SATA/PCIe lanes are limited, so bay count is board-dependent; verify before buying. You own hardware selection, drivers, and all support. TrueNAS CE and OpenMediaVault are free; Unraid is a paid, tiered perpetual license.
| Spec | Value | Verification |
|---|---|---|
| Representative CPU (entry) | Intel N100 — 4 cores / 4 threads, ~6 W; quiet, low idle power, fine for files + a few apps | Manufacturer-confirmedsource |
| Step-up CPU (more apps/VMs) | Intel Core i3-N305 — 8 cores / 8 threads, 15 W — for more Docker containers and light virtualization | Manufacturer-confirmedsource |
| Memory ceiling | 16 GB max, single-channel, non-ECC across the N-series — the honest limit of cheap DIY ZFS | Manufacturer-confirmedsource |
| NAS OS (free, ZFS) | TrueNAS Community Edition — free, OpenZFS: snapshots, replication, RAID-Z, self-healing checksums, Docker + VMs | Manufacturer-confirmedsource |
| NAS OS (paid, mixed drives) | Unraid — paid, tiered, perpetual license; mixed-size parity array (add any-size disk later) and a strong Docker/VM app server | Manufacturer-confirmedsource |
| Drive freedom | Any drive, any brand, no lock-in — you choose the hardware and own the support | Manufacturer-confirmedsource |
| Media transcoding | Intel QuickSync gives hardware HEVC/AV1 decode for playback; note no AV1 hardware encode on integrated graphics | Researchedsource |
Pick by use case
You want the least-hassle setup and the deepest app ecosystem, and you'll buy drives off Synology's list
→ Synology DS925+. DSM is the most complete NAS software, ECC protects your pool, and Synology Photos / Hyper Backup / Surveillance Station are first-party and well-integrated.
You want the most CPU, RAM headroom, and 10GbE for the money — and to use drives you already own
→ UGREEN NASync DXP4800 Plus. It includes 10GbE, scales RAM to 64 GB, and imposes no drive lock-in — more hardware per dollar if you can accept younger software.
You want maximum control, ZFS integrity or mixed-size drives, and the lowest cost per terabyte — and you'll be your own support desk
→ DIY: mini-PC + TrueNAS or Unraid. Open hardware and free OS options (TrueNAS CE for ZFS, or paid Unraid for a flexible parity array) give the most control — at the price of owning the integration and support yourself.
You move large files or edit over the network and need real 10GbE on a turnkey box
→ UGREEN NASync DXP4800 Plus. 10GbE is built in, where the DS925+ tops out at 2.5GbE (you'd step up to a DS1825+ plus an add-in card for 10GbE).
You're upgrading an older DS920+/DS923+ and value DSM continuity over raw specs
→ Synology DS925+. It's the direct successor — your DSM apps, backups, and workflow carry over, with dual 2.5GbE and dual NVMe as the main gains.
Run the numbers
Turn the decision into a calculation before you buy — size the capacity, the backup, and the UPS for your exact setup.
NAS storage and backup planner
Plan NAS usable capacity, parity vs cache behavior, daily-change headroom, and offsite copy gaps before buying drives or restructuring an array.
Backup plan builder
Score a home backup plan against 3-2-1, immutability, RPO/RTO, and ransomware-resistance — and get a concrete next-step list.
UPS runtime estimator
Estimate UPS runtime with chemistry-aware capacity math, SoC headroom, LFP cold-lockout warnings, and annual idle electricity cost.
Related runbooks
How we verified this guide
2026-06-16 · Reviewed by HomeTechOps. Specs were verified against each manufacturer's official product page and Intel ARK on 2026-06-16; the Synology drive-policy timeline is drawn from Synology's Knowledge Center and its DSM 7.3 announcement, with the 'lock-in' controversy framing attributed to press/community reporting rather than Synology's own wording. No prices are listed — they change, so we link out. We have not bench-tested these units; every spec is sourced, not asserted.
Source-backed checks
HomeTechOps turns official docs and conservative safety rules into a shorter runbook. These links are the source trail for the page direction.