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Western Digital

WD Ultrastar DC HC550 Spec and Price in the United Kingdom

SATA16TB7200 RPM

The HC550 is WD's data-center nearline drive of the 16-18TB generation: helium-sealed, 7200rpm, a 512MB cache, and a 2.5M-hour MTBF with a five-year warranty, per the WD data sheet. It is CMR with a 550TB/year workload rating, built for servers and enterprise arrays rather than desktop use — the 3.5-inch SATA form factor slots into any chassis, but the price assumes the buyer needs the endurance and the 24/7 rating, not the speed.

Current best price
From £574.95Price too old to confirm

Prices include VAT.

The last tracked price for the 18TB WD Ultrastar DC HC550 in the United Kingdom was £574.95 at Amazon.co.uk, captured 2026-10-12. Across one tracked merchant and 1503 days of recorded prices, the 90-day median for the 18TB WD Ultrastar DC HC550 is £737.98 and the lowest recorded price is £206.00. 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.

Price history

30D90D180DAll
  • 16TB
  • 18TB
May 25, 2026111 data pointstoday · £574.95

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
262 MB/s
Sequential write
262 MB/s
Rotation speed
7200 RPM
Form factor
3.5-inch
Cache
512 MB
Warranty
5 years

Capacities

ConfigurationPart numberRotation speedCacheCurrent best price
16TBWUH721816ALE6L47200 RPM512 MB

£575.00

Price too old to confirm

18TBWUH721818ALE6L47200 RPM512 MB

£574.95

Price too old to confirm

Guides for this category

How much hard drive you actually needWhat a mechanical drive is still for beside an SSD, how to size it for the pile you are offloading, and why a cheap high-capacity drive can be slow.Portable vs desktop hard driveWhat the enclosure decides between a bus-powered 2.5-inch drive and a mains-powered 3.5-inch one, and why an external listing carries fewer numbers.

Sources

Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.