Seagate Exos X18 Spec and Price in the United Kingdom
Exos X18 is Seagate's 16-18TB enterprise nearline drive: 7200rpm, 256MB of cache, a 550TB/year workload rating, and a five-year warranty, per the Seagate data sheet. It is CMR with enterprise firmware tuned for multi-drive arrays and high-density data centers — the same mechanics that later generations (X20, X24) kept while raising capacity. For a workstation or home server it is simply the reliable way to get 16-18TB on SATA.
Prices include VAT.
The last tracked price for the 16TB Seagate Exos X18 in the United Kingdom was £492.00 at Amazon.co.uk, captured 2026-09-04. Across one tracked merchant and 775 days of recorded prices, the 90-day median for the 16TB Seagate Exos X18 is £492.00 and the lowest recorded price is £163.33. This site began capturing prices on July 30, 2026; for Amazon listings, prices dated earlier come from Keepa's price history.
Captured periodically and may have changed.
- 16TB
- 18TB
Each point is one day's recorded price, not a list price. Points dated before July 30, 2026, when this site began capturing prices, come from Keepa's Amazon price history. How we track prices
Specifications
- Capacity
- 16TB
- Interface
- SATA
- Sequential read
- 270 MB/s
- Sequential write
- 270 MB/s
- Rotation speed
- 7200 RPM
- Form factor
- 3.5-inch
- Cache
- 256 MB
- Warranty
- 5 years
Capacities
| Configuration | Part number | Current best price |
|---|---|---|
| 16TB | ST16000NM000J | £492.00 Price too old to confirm |
| 18TB | ST18000NM000J | £525.00 Price too old to confirm |
What owners and reviewers say
Summarised from 1 source(s), reviewed September 13, 2026. A source is counted only where it names this model exactly. How we track prices
Commonly praised
- Praised for a solid warranty and a reasonable range of capacities, making the older drives cost-effective.
Commonly criticised
- Uses older technology, meaning lower capacities and worse data density, with less cache that can reduce performance.
Sources behind this summary
Guides for this category
Sources
Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.