| £/TB | Price | Size | Tech | Form Factor | Condition | Description |
|---|---|---|---|---|---|---|
| £24.35 | £486.99 | 20 TB | HDD | External | New | |
| £24.60 | £492.00 | 20 TB | HDD | External | New | |
| £28.13 | £562.63 | 20 TB | HDD | External | New | |
| £36.45 | £728.95 | 20 TB | HDD | External | New | |
| £36.80 | £735.99 | 20 TB | HDD | New | ||
| £37.30 | £745.99 | 20 TB | 3.5" | New | ||
| £39.85 | £797.04 | 20 TB | HDD | New | ||
| £42.88 | £857.57+0.6% 24h | 20 TB | HDD | 3.5" | New | |
| £48.75 | £975.00+32.7% 24h | 20 TB | HDD | 3.5" | New | |
| £52.66 | £1,053.29+0.2% 24h | 20 TB | External | New | ||
| £60.30 | £1,206.06 | 20 TB | HDD | 3.5" | New | |
| £74.32 | £1,486.37 | 20 TB | HDD | 3.5" | New |
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.