Synology NAS — brand guide & official drive lists
Each model page lists every HDD/SSD Synology officially marks compatible — plus the 2025 policy tier that model falls under (open, strict or legacy) and what still requires a certified drive.
Synology — The software-first NAS benchmark.
About Synology
Founded: 2000, by Cheen Liao & Philip Wong (both ex-Microsoft)
Headquarters: New Taipei, Taiwan
Operating system: DiskStation Manager (DSM), now at 7.4
Product families: DiskStation (desktop), RackStation (rack), FlashStation (all-flash), plus BeeStation and routers
Synology is the company that made NAS software famous. Founded in 2000 by two former Microsoft engineers who left to build their own storage OS, the Taiwanese firm shipped its first complete DiskStation in 2004 and has since become the default recommendation for home and small-business buyers worldwide — Wirecutter calls it a "longtime leader in the small-business and home NAS arena." By 2014 revenue passed NT$10 billion with roughly ASUS-level profits per its chairman, and in 2026 Gartner Peer Insights rated its backup portfolio 4.9/5.
The reason is DSM, its browser-based operating system. Two decades of polish show in the details: Photos with face recognition, Drive for Google-Docs-style collaboration, Active Backup for Business that backs up PCs, VMs and Microsoft 365 without extra licenses, Hyper Backup with client-side encryption, and an app store that makes a DiskStation feel more like an appliance than a server. For most buyers the deciding factor is simply that DSM is the most polished, best-documented NAS software on the market — the interface every competitor is compared against.
The hardware story is more complicated. Synology machines often run older CPUs with less RAM than same-price rivals, betting that software and reliability matter more than specs. And in 2025 the company attempted to lock new models to Synology-branded drives, a move that outraged its community; with DSM 7.3 (October 2025) it walked back the HDD lock for 2025 models, though M.2 SSD storage pools still require certified drives. Check each model page for the policy tier that applies.
Synology product lines
| Line | Segment | Notes |
|---|---|---|
| DS j/value (DS124, DS223j, DS423j) | Entry | Cheapest way into DSM; weaker CPUs, fewer expansion slots. |
| DS Plus (DS224+, DS423+, DS923+, DS925+) | Mainstream | The classic home/SOHO picks; 2-5 bays, transcoding-capable CPUs on Intel variants. |
| DS xs / neo (DS1823xs+, DS1525neo+) | Prosumer | 10GbE, stronger CPUs, higher drive counts for serious media libraries and work. |
| RS / FS / SA (RackStation, FlashStation) | Business | Rack-mount and all-flash lines with redundant power and enterprise support. |
| BeeStation / BeeDrive | Consumer cloud | Simplified personal-cloud devices aimed at non-technical users. |
Strengths & weaknesses
✓ What Synology does well
- Best-in-class software: DSM is the most polished NAS OS, with first-party photo, sync, backup, surveillance and container apps
- Excellent security track record and long firmware support windows
- Huge community: nearly every question has been answered somewhere
- Strong mobile apps and best-in-industry documentation
✗ Where it trails
- Premium pricing with conservative hardware — older CPUs and less RAM than same-price rivals
- 2025 drive-lock controversy: M.2 storage pools still require Synology-certified SSDs on new models
- No hardware transcoding on AMD-based Plus models (DS923+/DS1522+)
Who should buy Synology (and who shouldn't)
Good fit if you:
- Buyers who want an appliance that "just works" and value software polish over specs
- Small businesses that need license-free PC/VM/M365 backup (Active Backup for Business)
- Photo-library builders who want face recognition without a subscription
Look elsewhere if:
- You want maximum hardware per dollar — UGREEN, TerraMaster or Asustor give you more box for the money
- You need 10GbE at entry prices or lots of NVMe slots
Pricing: Premium: roughly $190 (DS223j) to $600+ (DS925+) for consumer 2-4 bay units; enterprise rack models run well past $2,000.
Software: DSM is the ecosystem play: Synology Photos, Drive, Office, Surveillance Station, Container Manager and Virtual Machine Manager are all first-party and license-free. The trade-off is a closed platform — no official way to run DSM on non-Synology hardware, and third-party app selection is curated rather than open.
Synology FAQ
Do Synology NAS still require Synology-brand hard drives?
No — after community backlash, DSM 7.3 (October 2025) re-opened third-party HDD support on 2025 models (DS425, DS225 and later). However, M.2 NVMe storage pools on those models still require Synology-certified SSDs. Pre-2025 models were never locked. Our model pages flag the exact policy tier per machine.
Which Synology model is the safe default?
The 4-bay DS423+/DS925+ tier is the classic choice: enough bays for RAID, Intel CPUs with transcoding, and full DSM feature support. For lighter needs the DS224+ covers backups and a media library.
Why is Synology hardware weaker than cheaper rivals?
Synology sells the software experience and long-term support, not spec sheets. If raw hardware matters more to you than DSM, compare the same bay count on our UGREEN or TerraMaster pages — but read their cons first.
All 251 Synology models — official drive lists
Synology drive policy, in one paragraph
Since DSM 7.3 (October 2025), 2025-model Synology Plus, Value and J series accept third-party HDDs and 2.5" SATA SSDs for storage-pool creation even when not on the official list. Rackmount (RS), surveillance and enterprise lines still require listed drives, and M.2 NVMe caching remains restricted on most models. Every model page in the grid above shows which tier your machine falls under — full policy timeline here.