We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Standard 3.5 inch hard drive with silver metal casing and printed label

Western Digital

Western Digital Ultrastar DC HC550 18TB 7200RPM SATA 512MB 3.5" Hard Drive

SKU CH-DHYP-4W273

An 18 TB desktop drive spinning at 7200 RPM with a 512 MB cache and 4.16 ms average latency for high-capacity storage

  • Total capacity18 TB
  • Interface typeSATA
  • Rotational speed7,200 RPM
  • Cache memory512 MB
  • Mean latency4.16 ms
  • 18TB capacity for massive data storage
  • 7200 RPM spindle speed enables fast sequential access
  • 512MB cache buffers heavy write workloads
  • SATA 6Gb/s interface fits standard servers
  • 16ms average latency supports responsive reads

Ultrastar DC HC550 18TB enterprise drive

The Western Digital Ultrastar DC HC550 is a 3.5-inch internal hard drive built for desktop and server environments that demand high capacity. It spins at 7200 RPM and provides 18TB of storage through a SATA interface with a 512MB cache buffer.

Suited for bulk storage arrays

This drive fits users who need a single large volume for backups, media libraries or cold data tiers where sequential throughput matters more than random access speed. Buyers who require low-latency transactional performance or solid-state responsiveness should consider flash-based alternatives instead.

SATA 6Gbps interface with 512MB cache

The SATA connection and 512MB cache determine how the drive integrates with host controllers and handles burst transfers. Average latency is rated at 4.16ms, reflecting the mechanical 7.2K rotational speed.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $413.99
Pricier than about 90% of the 4,938 comparable items (median $107.99).
Total capacity 18 TB
Higher than about 93% of the 2,372 comparable items (median 2 TB).
Price per TB $23.00 per TB
Cheaper than about 91% of the 2,365 comparable items (median $62.21 per TB).

New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameWester Digital
Product lineUltrastar DC HC550
Total capacity18 TB
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Cache memory512 MB
Ports & slots
Interface typeSATA

More in 3.5-Inch Internal Desktop HDDs

Similar items