Best Business NAS & Shared Storage UK (2026)
Research-led guide — checked 7 October 2026: The Tools and Tech has not hands-on tested every NAS below. We compared current official specifications, networking, drive-bay design, software platforms, expansion and support positioning. NAS pricing changes with memory, drives, reseller and warranty, so always price the complete system rather than the empty enclosure.
Quick answer
Synology DS925+ is the best starting point for a small business that values a mature software ecosystem, straightforward backup/file-sharing workflows and a clear expansion path. UGREEN NASync DXP4800 Plus is the hardware-value choice when 10GbE, stronger processor headroom and third-party-drive flexibility matter. QNAP TS-464 is the flexible alternative for users who want dual 2.5GbE, M.2 slots, PCIe expansion and a broad application/virtualisation platform.
At a glance
| NAS | Best for | Networking | Main strength |
|---|---|---|---|
| Synology DS925+ | Small-business file sharing and backup | 2× 2.5GbE | Mature DSM software and expansion ecosystem |
| UGREEN NASync DXP4800 Plus | High-throughput value | 10GbE + 2.5GbE | Strong hardware for the money |
| QNAP TS-464 | Flexible storage, apps and expansion | 2× 2.5GbE; optional 10GbE via PCIe | PCIe, M.2 and broad QTS/QuTS hero capabilities |
Best all-round small-business NAS: Synology DS925+
The DS925+ is a four-bay NAS built around an AMD Ryzen V1500B four-core/eight-thread processor. Synology ships it with 4GB ECC DDR4 memory, two 2.5GbE ports and two M.2 NVMe slots that can be used for cache or supported storage pools. It can expand from four to nine drive bays with a DX525 expansion unit.
Synology positions the DS925+ for endpoint backup, file sync/sharing and surveillance workloads. Its current specification page lists support for up to 40 IP cameras and measured sequential throughput above 500MB/s under Synology’s test conditions. The bigger reason to choose it, though, is DSM: small businesses can build file shares, backup jobs, snapshots, remote sync and account permissions around one relatively coherent management platform.
Best for: teams that want storage to behave like business infrastructure rather than a hobby server.
Check before buying: Synology’s compatibility list. Synology explicitly states that full functionality, reliability and support are guaranteed only for compatible drives and recommends Synology memory for expansion. Price the approved drives you intend to use before committing to the enclosure.
Best hardware value: UGREEN NASync DXP4800 Plus
UGREEN’s DXP4800 Plus is a four-bay NAS with an Intel Pentium Gold 8505 five-core/six-thread processor, 8GB DDR5 memory and two M.2 slots. Its standout feature for the price is networking: one 10GbE port plus one 2.5GbE port are built in, so a business working with large media or backup sets can avoid buying a separate 10GbE expansion card.
The current UK listing is around £535.99 at the time of our check, with sale pricing changing regularly. UGREEN lists support for third-party drives from major manufacturers, RAID 0/1/5/6/10, UGOS Pro, Docker-style workloads and memory expansion up to 64GB. It also includes HDMI output and a 128GB system SSD.
Best for: buyers who know they can use 10GbE and want more raw hardware capability per pound.
Main consideration: Synology and QNAP have much longer histories as NAS software vendors. A business should evaluate not only today’s hardware but the maturity of backup applications, update policy, identity integration, restore workflow and support processes it expects to rely on over several years.
Best flexible alternative: QNAP TS-464
QNAP’s TS-464 is another four-bay x86 NAS. The current 8GB version uses an Intel Celeron N5095 quad-core processor, dual 2.5GbE ports, two M.2 PCIe slots and a PCIe expansion slot. QNAP’s UK store has listed the 8GB model around £636, with availability varying.
The PCIe slot is important for businesses that may later add 10GbE or other expansion. QNAP also supports QTS and, on supported firmware, QuTS hero for ZFS-based storage features. Hardware-accelerated video processing and HDMI output make the platform flexible beyond basic file serving, although flexibility also means more configuration choices to manage securely.
Best for: technically confident teams that want a broad NAS application platform, optional 10GbE expansion and strong I/O flexibility.
RAID is not backup
RAID can keep a storage pool available after certain drive failures, but it does not protect against accidental deletion, ransomware, theft, fire or a bad administrative change. Business NAS deployment should include at least one separate backup destination and ideally an off-site or cloud copy for critical data.
Our external SSD guide can help with local removable backup media, while the broader Cyber Essentials guide covers baseline security controls.
What to plan before buying a NAS
- Usable capacity: calculate after RAID/parity, not by multiplying the drive labels.
- Growth: allow space for at least the next few years of documents, media, backups and version history.
- Network speed: 10GbE only helps when the switch, client adapters, cabling and storage array can keep up.
- Backup: plan a second copy before moving business-critical data onto the NAS.
- UPS: graceful shutdown during power failure is worth planning for a business file server.
- Permissions: avoid one shared administrator login; use individual accounts and least-privilege access.
- MFA: enable multi-factor authentication for administrative/cloud-connected services where available.
- Updates: schedule firmware and application patching rather than leaving the NAS unchanged for years.
- Remote access: expose as little as possible directly to the internet; prefer the vendor’s secure access tools or a well-managed VPN where appropriate.
How we researched this guide
We checked the current official Synology DS925+, UGREEN NASync DXP4800 Plus and QNAP TS-464 specification/product pages. We compared processor class, memory, networking, M.2/PCIe expansion, drive-bay architecture and software positioning. We have not fabricated throughput tests or reliability data.
Primary sources
- Synology DS925+ official specifications
- UGREEN NASync DXP4800 Plus official UK product page
- QNAP TS-464 official specifications
Frequently asked questions
How many NAS bays does a small business need?
Four bays are a useful starting point for many small teams because they allow more flexible RAID layouts and future capacity than a two-bay enclosure. Larger teams, video workflows and longer retention periods may need six or more bays.
Do I need 10GbE?
Not for basic office files or ordinary endpoint backups. 10GbE becomes easier to justify for large creative files, multiple power users or heavy backup/restore workloads.
Can a NAS replace cloud backup?
No. A NAS can be part of the backup system, but keeping every copy in one building and under one administrator account leaves common failure and attack scenarios unresolved.
Final verdict
Choose Synology DS925+ when software maturity and straightforward business backup/file-sharing workflows come first, UGREEN DXP4800 Plus when built-in 10GbE and hardware value are more important, and QNAP TS-464 when you want a flexible platform with PCIe expansion. Whichever enclosure you choose, budget for drives, backup, a UPS and secure administration—the empty NAS is only part of the real system cost.
Continue to our Connectivity & Storage coverage and Networking & Wi-Fi guides.
