WD Ultrastar DC HC550 16TB 3.5" SATA HDD - 7200rpm, 512MB Cache, Enterprise-Grade

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£626.63 /PC
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£407.31 /PC VPN: WUH721816ALE6L4 EAN: 8592978268664

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Estimated delivery date:
30 Jul 2026 - 03 Aug 2026
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WD Ultrastar DC HC550 16TB 3.5" SATA HDD - 7200rpm, 512MB Cache, Enterprise-Grade
The WD Ultrastar DC HC550 16TB HDD is a high-performance, energy-efficient hard drive designed for enterprise-level data centres and cloud environments. Equipped with advanced technologies like Energy-Assisted Magnetic Recording (EAMR) and triple-stage actuator (TSA), it delivers unmatched reliability, high capacity, and optimal performance, making it the perfect solution for demanding storage needs.

Product Overview

The WD Ultrastar DC HC550 16TB is an industry-leading hard disk drive tailored for high-demand environments such as public and private cloud infrastructures. It incorporates cutting-edge features like EAMR and HelioSeal technology, offering superior data density and reduced Total Cost of Ownership (TCO). With an extended Mean Time Between Failures (MTBF) of 2.5 million hours, this drive provides peace of mind with exceptional durability and reliability. Its robust design and advanced capabilities ensure peak performance even in multi-drive and vibration-prone setups, making it ideal for data-heavy applications.


Key Features
  • Massive 16TB Capacity: Offers 29% more storage than 14TB helium-filled drives.
  • Energy-Assisted Magnetic Recording (EAMR): Maximises areal density for higher capacity.
  • Triple Stage Actuator (TSA): Delivers precise head positioning for improved data integrity.
  • HelioSeal Technology: Reduces power consumption and enhances performance.
  • Media Cache Plus Architecture: Optimises random write performance.
  • Rotational Vibration Safeguard (RVS): Ensures stability in high-vibration environments.
  • SATA 6Gb/s Interface: Ensures compatibility with advanced data centres.
  • 512MB Cache Buffer: Improves response time for demanding workloads.
  • 5-Year Warranty: Comprehensive manufacturer coverage.

Technical Specifications
  • Capacity: 16TB
  • Form Factor: 3.5"
  • Interface: SATA 6Gb/s
  • Spindle Speed: 7200 RPM
  • Cache Buffer: 512MB
  • Power Consumption: 6.5W (active), 5.6W (idle)
  • Dimensions: 101.6mm (W) x 147mm (D) x 26.1mm (H)
  • Weight: 690g
  • MTBF: 2.5 million hours
  • Operating Temperature: 5°C to 60°C
  • Warranty: 5 years

Ideal Use For Data Centre Operators:

Optimised for high-density cloud storage, the Ultrastar DC HC550 enables cost-efficient scaling and enhanced power efficiency in large data centre environments.

For Enterprise Workloads

Its durability, reliability, and advanced data integrity features make it ideal for enterprise IT systems, databases, and critical applications.

For Multi-Drive Systems

Designed to excel in RAID arrays and environments prone to vibration, ensuring consistent performance and reduced downtime.

For Archiving and Backup Solutions

Massive storage capacity and energy efficiency make it perfect for long-term data archiving and backup operations.


This WD Ultrastar DC HC550 16TB HDD is the ultimate choice for businesses and professionals who demand top-tier performance, reliability, and efficiency for their data storage needs. Whether you're managing a cloud environment or scaling enterprise storage, this drive is engineered to meet the most demanding requirements.

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