| £/TB | Price | Size | Tech | Form Factor | Condition | Description | Rating | Reviews | |
|---|---|---|---|---|---|---|---|---|---|
 | £25.17 | £503.48-0.3% 24h | 20 TB | HDD | External | New | ★★★★½ 4.6 | 19,815 | |
 | £27.96 | £559.23-0.8% 24h | 20 TB | HDD | External | New | ★★★★☆ 4.0 | 2,778 | |
 | £29.50 | £590.00 | 20 TB | HDD | External | New | ★★★★☆ 4.3 | 18,797 | |
 | £32.00 | £640.06 | 20 TB | HDD | 3.5" | Renewed | ★★★★☆ 4.4 | 16 | |
 | £33.15 | £663.00 | 20 TB | HDD | 3.5" | New | ★★★★☆ 4.3 | 27 | |
 | £35.75 | £715.00 | 20 TB | HDD | 3.5" | New | ★★★★☆ 4.1 | 123 | |
 | £36.25 | £725.00 | 20 TB | HDD | External | New | ★★★★☆ 4.0 | 753 | |
 | £39.27 | £785.47 | 20 TB | HDD | 3.5" | New | ★★★★½ 4.5 | 1,999 | |
 | £39.69 | £793.80+0.7% 24h | 20 TB | HDD | 3.5" | New | ★★★★☆ 4.2 | 816 | |
 | £42.45 | £848.99 | 20 TB | HDD | 3.5" | New | ★★★★☆ 4.0 | 1,821 | |
 | £46.85 | £937.08 | 20 TB | HDD | 3.5" | New | ★★★★☆ 4.1 | 733 | |
 | £48.19 | £963.77 | 20 TB | HDD | External | New | ★★★★☆ 4.4 | 1,831 | |
 | £49.94 | £998.88 | 20 TB | HDD | 3.5" | New | ★★★★½ 4.8 | 5 | |
 | £49.95 | £999.00 | 20 TB | HDD | 3.5" | New | ★★★★☆ 4.3 | 275 | |
 | £52.39 | £1,047.83-1.2% 24h | 20 TB | HDD | Internal | New | ★★★★☆ 4.2 | 113 | |
 | £53.88 | £1,077.63 | 20 TB | HDD | External | New | ★★★★☆ 4.2 | 1,048 | |
 | £66.68 | £1,333.64+10.0% 24h | 20 TB | HDD | 3.5" | New | ★★★★☆ 4.0 | 15 | |
 | £68.91 | £1,378.16+5.3% 24h | 20 TB | HDD | 3.5" | New | ★★★★½ 4.6 | 12 | |
 | £72.64 | £1,452.75 | 20 TB | HDD | 3.5" | New | ★★★★☆ 4.4 | 28 | |
 | £84.46 | £1,689.28 | 20 TB | HDD | Internal | New | ★★★★½ 4.5 | 22 |
20TB drives: high-capacity, mostly enterprise stock
20TB is at the upper end of what's readily available, and new consumer options are limited — most of the catalogue at this size is enterprise-class or Renewed. The table above ranks every 20TB drive by real cost per terabyte.
- Renewed enterprise (Seagate Exos, WD Ultrastar): the main source of drives at this size, and usually the only way to get a competitive £/TB.
- New desktop/external: a handful of options exist, generally at a higher £/TB than the enterprise-pull drives above.
Fewer SKUs exist at 20TB than at 16TB or 18TB, so it's worth checking those pages too — a smaller drive with better stock availability sometimes beats 20TB on £/TB.
Frequently asked questions
How does disks.co.uk rank 20TB drives?
We rank every 20TB drives by real cost per terabyte (£/TB) — the live Amazon.co.uk price divided by capacity — so the best value appears at the top. Prices refresh several times a day from Keepa, with 24-hour movement and all-time-low flags.
What is the cheapest 20TB drives drive right now?
The drive at the top of the table above is the cheapest 20TB drives option by £/TB at the moment. Larger capacities usually cost less per terabyte, so it is worth comparing 20TB drives against the next size up before you buy.
Is a 20TB drives drive good value?
Value depends on £/TB, not the sticker price. Use the ranking above to compare, and open any drive for its full Keepa price history to check whether today's price is genuinely low.
What is a 20TB drives drive good for?
It comes down to how much you store — see our storage sizing guide. As a rule, buy one size up if the £/TB is similar, so you do not run out sooner.