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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 £575.00at Amazon.co.uk · captured 2026-09-15View at Amazon.co.uk

Captured periodically and may have changed.

Price history

30D90D180DAll
  • 16TB
  • 18TB
March 30, 2026111 capturestoday · £575.00

Each point is one capture, not a list price. 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

at Amazon.co.uk · captured 2026-09-15

18TBWUH721818ALE6L47200 RPM512 MB
£575.00

at Amazon.co.uk · captured 2026-09-15

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.