Synology DS224+ or QNAP TR-004: the right storage choice for your setup
These two products solve very different problems, even though they often appear in the same shopping shortlist. The Synology DS224+ is a full two-bay NAS with its own operating system, apps, and network access, while the QNAP TR-004 is a four-bay expansion unit that only becomes useful when attached to another computer or NAS. If you want a simple answer: one is a self-contained server, the other is a storage add-on. That makes the better buy depend less on brand and more on whether you need a complete NAS or just extra drive bays.

Synology 2-Bay DS224+ (Black) NAS, Metal, Surface Mount, Compatible with Computers & Laptops

QNAP TR-004 4 Bay Desktop NAS Expansion - Optional Use as a Direct-Attached Storage Device
Our Recommendation
The Synology DS224+ is the better overall purchase because it is a complete NAS, not just a storage enclosure. It gives you independent network access, a stronger software platform, and far more flexibility for backups, Plex, Docker, and general home-lab use. The QNAP TR-004 is cheaper and has four bays, but it cannot replace a real NAS on its own. If you want one device to build your storage around, choose the Synology.
Detailed Comparison
Display
Neither product has a display, screen, or front-panel UI in the way a consumer device might. There is no winner here on display quality because neither is designed around a screen-based experience. Instead, you manage the Synology DS224+ through Synology DSM in a web browser, while the QNAP TR-004 is managed through QNAP’s utility software and whatever host device it is attached to. Winner: tie, because display quality simply does not apply.
Performance
This is where the products diverge sharply. The Synology DS224+ is a full NAS with an Intel Celeron-class processor, 2 drive bays, and enough capability for file serving, backups, media streaming, Docker, and light Plex duties. It connects to your network directly, so multiple devices can access it independently, and it can run services continuously without needing a PC switched on. The QNAP TR-004 has no CPU of its own for NAS duties; it is a 4-bay direct-attached storage enclosure that depends on the host machine for intelligence and file sharing. In pure storage expansion terms, the TR-004 gives you more bays, but in actual system performance the DS224+ wins because it is a complete server rather than a passive box. Winner: Synology DS224+.
Build quality and design
Both products are aimed at practical home-lab users rather than flashy consumers. The Synology DS224+ is a compact 2-bay desktop NAS with a metal chassis and a clean, understated design that fits well in a study, utility room, or living room. It is built to be left on 24/7 and integrates neatly into a network environment. The QNAP TR-004 is also a desktop unit, but it is more utilitarian: four drive bays in a straightforward expansion chassis, with the emphasis on capacity rather than standalone intelligence. If you want a polished appliance that feels like a finished NAS, Synology wins. If you want a no-nonsense box to hold more disks, the QNAP is perfectly sensible, but less elegant as a primary device. Winner: Synology DS224+.
Battery life
Neither product has a battery, so this category does not apply in a literal sense. What matters instead is operational independence and resilience. The Synology DS224+ can stay online as its own always-on storage server as long as it has mains power and network connectivity, while the TR-004 cannot function as a standalone service without a host computer or compatible NAS. In that practical sense, Synology offers far better “always available” behaviour. Winner: Synology DS224+.
Price and value for money
Here the QNAP TR-004 has a major advantage on sticker price: £289.31 versus £707.03 for the Synology DS224+, a difference of £417.72. If you already own a compatible NAS or PC and simply need four additional bays, the TR-004 is far better value because you are paying for storage expansion only. However, if you need a complete NAS from scratch, the DS224+ is not overpriced in the context of what it includes: CPU, OS, apps, network connectivity, and a polished management experience. The QNAP wins on raw price, but only if you truly need expansion rather than a full solution. Winner: QNAP TR-004.
Game library/features
Neither product is a gaming device, so “game library” does not apply. If we translate this to features, the Synology DS224+ clearly wins because it offers a much broader software ecosystem: shared folders, snapshots, backup jobs, remote access, media indexing, surveillance options, and Docker support for many home-lab workflows. The TR-004 is much more limited, functioning mainly as extra storage with RAID support when attached to a host. For Plex users, backup-heavy households, or anyone building a self-hosted stack, the DS224+ is in a different league. Winner: Synology DS224+.
Overall user experience
The Synology DS224+ is the better experience for most people because it is self-contained, easier to integrate into a home network, and more flexible over time. You get a proper NAS that can serve files to computers and laptops, run services, and grow into a more capable home server. The QNAP TR-004 is simpler in one sense, but it relies on another machine and is best treated as an add-on, not a foundation. If your goal is “buy one box and be done,” the Synology is the clear winner. If your goal is “I already have a NAS and need more bays cheaply,” the QNAP makes sense. Overall summary: Synology DS224+ is the definitive choice for a standalone NAS; QNAP TR-004 is the better buy only as an expansion device.
Buy the Synology 2-Bay DS224+ if...
Buy the Synology DS224+ if you want a standalone NAS for shared files, backups, Plex, or self-hosted services. It is the right choice if you need a proper always-on box that works independently of your PC and can grow with your home network. It also makes more sense if you value Synology’s software ecosystem and a simpler setup experience.
Buy the QNAP TR-004 4 if...
Buy the QNAP TR-004 if you already own a compatible NAS or desktop and only need extra drive bays at the lowest cost. It is a good fit for users who want to expand capacity without paying for a second full NAS. Choose it if your priority is cheap, direct-attached storage rather than a standalone server.
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