TerraMaster NAS Deals UK – Prime Big Deal Days 2026
Prices checked
Prime Big Deal Days runs 6 to 7 October 2026 for Prime members, with new Today's Big Deals three times a day. We re-check these prices at 08:00, 16:00 and 21:00 UK time.
As an Amazon Associate we earn from qualifying purchases. Prices and availability come from Amazon.co.uk as of the last update and may change.
What is genuinely cheap here today: the TerraMaster F4-425 at £299.99 (£75.00/bay), at or below the lowest price we have recorded for it (£399.99 on 22 Jul 2026). 3 of 7 products in the table are at or near their own recorded low; the rest only beat Amazon's reference price or are new to our tracker.
TerraMaster is carrying some of the largest headline cuts of the event on Amazon.co.uk, across the F4-425 Plus, F4-424 Pro, the all-flash F8 SSD Plus and the D8 Hybrid direct-attached enclosure. Big percentages are only meaningful against a real reference, so each unit here is checked against what we logged for that exact listing. TerraMaster's TOS accepts any drive, which keeps the fill cost low.
Today's prices, judged against our own records
| Product | Bays | Price | Amazon was | Value | Our recorded low | Verdict | |
|---|---|---|---|---|---|---|---|
| TerraMaster F4-425Prime deal checked 6 Oct 2026 | 4 bays | £299.99 | £75.00/bay | £399.9922 Jul 2026 | Real low | Buy on Amazon | |
| TerraMaster F2-425Prime deal checked 6 Oct 2026 | 2 bays | £209.99 | £105.00/bay | £237.9924 Jul 2026 | Real low | Buy on Amazon | |
| TerraMaster F4-424 ProPrime deal checked 7 Oct 2026 | 4 bays | £529.29 | £132.32/bay | £592.4923 Jul 2026 | Real low | Buy on Amazon | |
| TerraMaster D8 HybridPrime deal checked 7 Oct 2026 | 8 bays | £239.99 | £30.00/bay | None yet | No history yet | Buy on Amazon | |
| TerraMaster F8 SSD PlusPrime deal checked 7 Oct 2026 | 8 bays | £582.19 | £72.77/bay | None yet | No history yet | Buy on Amazon | |
| TerraMaster F4-425 PlusPrime deal checked 7 Oct 2026 | 4 bays | £351.99 | £88.00/bay | None yet | No history yet | Buy on Amazon | |
| TerraMaster F2-425 PlusPrime deal checked 7 Oct 2026 | 2 bays | £335.99 | £168.00/bay | None yet | No history yet | Buy on Amazon |
Out of stock on Amazon.co.uk at our last check: TerraMaster F4 SSD.
Verdicts compare today's price with the lowest price we have recorded for the same listing. Amazon was is Amazon's own reference price. Prices can change after our check; the price on Amazon.co.uk at checkout applies.
Is it really a deal?
TerraMaster's percentage badges are large, so we separate cuts that beat our own logged low from ones that only beat Amazon's reference price. 3 of 7 products we have re-priced are at or within 3% of their lowest recorded price; the TerraMaster F4-425 is 25% under our recorded low of £399.99, logged on 22 Jul 2026. 4 are too new to our tracker to measure, so for those we show Amazon's own was-price as Amazon's claim, and the fill-cost table below is the better guide to value.
Cheapest full build for each unit
For each enclosure on this page, the drive size that gives the lowest cost per usable terabyte at today's prices.
| Build | Enclosure | Drives | Total | Usable | £ per usable TB | |
|---|---|---|---|---|---|---|
| TerraMaster F4-425+ 4 x WD Red Pro 22TB Real low | £299.99 | £1,460.00 | £1,759.99 | 60.0TB RAID 540.0TB RAID 6 | £29.32 | Buy Now |
| TerraMaster F4-425 Plus+ 4 x WD Red Pro 22TB Real low | £351.99 | £1,460.00 | £1,811.99 | 60.0TB RAID 540.0TB RAID 6 | £30.19 | Buy Now |
| TerraMaster F4-424 Pro+ 4 x WD Red Pro 22TB Real low | £529.29 | £1,460.00 | £1,989.29 | 60.0TB RAID 540.0TB RAID 6 | £33.14 | Buy Now |
| TerraMaster F2-425+ 2 x WD Red Pro 22TB Real low | £209.99 | £730.00 | £939.99 | 20.0TB RAID 1 | £46.98 | Buy Now |
| TerraMaster F2-425 Plus+ 2 x WD Red Pro 22TB Real low | £335.99 | £730.00 | £1,065.99 | 20.0TB RAID 1 | £53.28 | Buy Now |
Usable space uses the same maths as our RAID calculator, after about 9% formatting overhead. Drive prices are the cheapest in-stock NAS-rated CMR drive at each size when we last checked. Buy Now adds the enclosure and all the drives to your Amazon.co.uk basket in one go.
Frequently asked questions
Is TerraMaster's TOS as good as Synology DSM?
It is less polished and its mobile apps are thinner, but it covers RAID, snapshots, Docker and media serving. Buyers who want the most hardware for the money accept that trade.
What is the D8 Hybrid and does it need a computer?
It is a USB direct-attached enclosure with drive bays and M.2 slots, not a NAS, so it depends on a PC or Mac. It works well as bulk storage beside a NAS or a mini PC server.
Does the F8 SSD Plus take hard drives?
No. It is an all-M.2 NVMe unit, so it pairs with the NVMe drives on our cache SSD page, and it is quiet and fast at the cost of price per terabyte.
Are TerraMaster's big percentage cuts genuine?
Some are and some are measured against a reference price the unit rarely sold at. The verdict column tells you which, using the lowest price we logged for each listing.
Related
- Best TerraMaster NAS UK 2026: Top Picks Ranked
- Best NAS drives for the TerraMaster F4-425 Plus
- Best NAS drives for the TerraMaster F4-424 Pro
- NAS RAID Calculator 2026: SHR, RAID 5/6 Capacity
- TerraMaster F4-425 Plus Deals UK – Prime Big Deal Days 2026
- TerraMaster F4-424 Pro Deals UK – Prime Big Deal Days 2026
- All-SSD NAS Deals UK – Prime Big Deal Days 2026
- All Prime Big Deal Days NAS and drive deals