NAS Black Friday Deals UK 2026: What to Buy

Which NAS option should you choose?

For a flexible four-bay home server with faster networking, choose UGREEN DXP4800 Plus.

For buyers who prioritise the Synology software and backup ecosystem, choose Synology DS925+.

Choose capacity and redundancy together

Work out how much data you have now, how quickly it grows, and how much free space you need for comfortable use. A four-bay system can leave room to expand, but buying four drives immediately is a different budget from starting with two. Compare the complete enclosure-and-drive cost before choosing a larger chassis. A diskless NAS contains no main storage drives unless the offer explicitly includes them.

Redundancy helps a system keep working after certain drive failures. It does not recover a file that was deleted everywhere, stop every ransomware incident, or protect the enclosure against theft or fire. Keep another recoverable copy of important files. A separate local backup and an off-site copy are sensible parts of a home or small-business storage budget.

The network decides how useful fast drives become

A NAS connects to your computer through a chain of interfaces. The NAS port, switch, computer adapter and storage workload all matter. Faster Ethernet on the enclosure provides little benefit when the computer remains connected at a lower rate. For occasional document backup, the simplest reliable connection may be enough. For frequent large media transfers, budget for the complete faster path.

NVMe slots do not always serve the same role. Depending on the model, they may be usable for storage, cache, or a more restricted purpose. Check the enclosure documentation before buying SSDs for them. A cache is not automatically useful for a small number of sequential file transfers. Spend first on the capacity, reliability and network connection that address the workload you actually have.

Match the operating system to the people using it

Choose the applications and backup tools that your household or team will actually use. A capable processor is useful for some media and application workloads, but it does not replace an understandable administration interface or a dependable restore process. For a less technical household, a system with the right supported applications can be worth more than a faster system that nobody maintains.

If you plan to replace the supplied operating system, check the exact model, boot process, storage controller and recovery procedure before treating the enclosure as a general server. Keep a copy of the original recovery instructions. Warranty terms and manufacturer support can differ when software or hardware is changed. Budget the time required to maintain the chosen system over its useful life.

Select drives for the enclosure rather than by capacity alone

Use the manufacturer compatibility information for the exact NAS and drive model. An ordinary desktop drive, a NAS drive and an enterprise drive can differ in recording method, noise, workload rating and support expectations. A SAS drive requires a SAS-capable controller; it is not a drop-in replacement for a SATA drive in a consumer NAS bay.

For an SSD-only NAS, include the SSDs and any required heatsinks in the total. The quieter enclosure does not make flash capacity inexpensive, and a faster set of drives does not remove a slow network link. Confirm the supported SSD form factor, interface and mounting arrangements. Keep enough free capacity for the chosen filesystem and the way you intend to use snapshots.

Choose the right alternative when a model is unavailable

Keep the requirements that matter: usable capacity, bay count, required applications, network speed and room to grow. A different brand can be a good alternative when its software supports the job. A two-bay device is not equivalent to a four-bay plan that depends on later expansion, and an HDD enclosure is not a substitute for an NVMe-only workload.

Compare a drive bundle with the same enclosure plus suitable drives bought separately. Check how many drives are included and the capacity of each drive. Do not count the advertised sum of every drive as the final usable capacity after redundancy. A genuine saving is a lower complete cost for a setup that still meets the capacity and recovery needs.

A home backup NAS and an application server need different resources

For file backup and ordinary sharing, dependable storage, clear access permissions and an easy restore process come first. Extra CPU cores may add little when the system mainly waits for a scheduled backup. For containers, virtual machines, media processing or several busy users, memory and processor headroom become more important. List the applications that need to stay responsive while a backup or maintenance task is running.

A separate mini PC can run applications while the NAS concentrates on storing the files. That approach adds another device and a network connection, but it can make future upgrades simpler. A combined NAS server can be convenient when its hardware and supported applications fit the workload. Compare both complete arrangements, including storage drives, networking, backup and the time available to maintain them.

Noise, placement and recovery matter after the sale

Choose a location with ventilation, a stable network connection and tolerable drive noise. A multi-bay HDD system can be audible even when the enclosure fan is quiet. An SSD-only system changes the noise profile, but it also changes the capacity budget. Do not put a larger system in a poorly ventilated cabinet just because it fits physically. Access to the drives and power connection should remain practical.

Write down how the files will be recovered if the enclosure stops working. Keep account recovery information, encryption recovery material where applicable, and a backup outside the enclosure. A storage system that can survive one failed drive still needs a recovery plan for other failures. Test the important files and applications after initial setup, while replacing a poorly suited purchase is still straightforward.

Estimate usable capacity before ordering drives

For a simple equal-size array, a rough single-parity estimate is the capacity of all but one drive; a dual-parity estimate leaves the capacity of two drives unavailable for user data. Filesystem overhead and decimal-versus-binary reporting reduce the figure shown by the operating system. Mirrors and mixed-size configurations behave differently. Use the capacity calculator as an initial estimate, then use the enclosure and filesystem documentation for the actual arrangement. Leave free space rather than planning to fill the estimated usable capacity immediately.

Buying NAS in the UK

For NAS in the UK, begin with UGREEN DXP4800 Plus for a flexible four-bay home server with faster networking. Compare Synology DS925+ when buyers who prioritise the Synology software and backup ecosystem is the more useful choice. The Amazon links and prices on this page use Amazon UK and pounds. Add delivery and any required components to the amount you are comfortable paying. For a model family with several configurations, use the model name and the installed components together when comparing these two choices. Keep the seller’s order details so you can check that the hardware you receive is the version you chose.