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WD Ultrastar DC HC550 18TB Hard Drive 3.5″ Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4)

**WD Ultrastar DC HC550 18TB Hard Drive**
A high-capacity 3.5″ SATA internal HDD designed for enterprise and data center use, offering 18TB storage, 7200 RPM speed, and a 512MB cache for rapid data access. Features 512e sector emulation for broad compatibility, helium-sealed (HelioSeal) design to enhance drive efficiency, reduce power consumption, and enable higher storage density. Built for 24/7 operation with enterprise-grade durability, high workload tolerance, and advanced error correction. Ideal for cloud storage, large-scale servers, and data-intensive applications, combining massive storage, reliability, and energy efficiency in a robust, enterprise-optimized solution.

Quote50 pcs(MOQ) Minimum Order Quantity

Bulk Order Discounts Available

BrandWestern Digital
Products StatusNew
ApplicationServer
InterfaceSATA 6Gb/s
Capacity18TB

ULTRASTAR DC HC550 – 18TB

Data center decisions are driven by TCO. The Ultrastar DC HC550, with 14TB, 16TB & 18TB1, play a leading role in reducing TCO.
Ultrastar<sup></sup> DC HC550 - 18TB

Total Cost Of Ownership (TCO) Drives The Data Center Architecture

Data center decisions are driven by TCO. Higher capacity hard drives play a leading role in reducing TCO. An 18TB data center internal hard drive provides 29% more capacity in the same form factor as a 14TB HDD. Higher capacity HDDs enable data centers to lower CapEx by reducing supporting hardware and system level costs when compared to lower capacity drives. Helium-sealed, low power, high reliability drives reduce energy and maintenance costs, contributing to OpEx savings. For example, a data center using 18TB HDDs vs. 14TB HDDs can require 22% fewer racks while consuming 21% less power per TB at idle, resulting in significant overall TCO reduction for data center environments.

Raising The Capacity Bar With New Technologies

Ultrastar DC HC550 integrates a suite of technologies on a 9-disk platform to create a new class of HDDs. 18TB capacity is achieved by combining technologies that improve areal density working together with technologies that improve performance and reduce power consumption.? The first internal hard drives in the industry to harness Energy-Assisted Magnetic Recording (EAMR) technology improves writability and therefore increases areal density. The industry’s first Triple Stage Actuator (TSA) enhances head-positioning accuracy, delivering better performance and increased areal density.? HelioSeal’ technology is the foundation for Western Digital’s high capacity HDDs and this is the 6th generation of HelioSeal product. Western Digital has shipped >65 million HelioSeal products to date.

SPECIFICATIONS

General
Capacity 18TB
Interface SATA
Security SE
compatibility Windows, Windows Server, Linux
Dimension 5.79″ x 4″ x 1.03″
Product Weight 1.52lbs
Transfer Rate up to 269MB/s
Drive 3.5″
Brand

Western Digital

Products Status

New

Application

Server

Interface

SATA 6Gb/s

Capacity

18TB

Form Factor

3.5"

Cache

512MB

RPM

7200 RPM

Model

WUH721818ALE6L4-0F38459

Height (maximum)

26.10mm

Length (maximum)

147.00mm

Width (maximum)

101.60mm

Average Latency

4.16ms

Recording Technology

CMR

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