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The WD Ultrastar DC HC550 18TB Enterprise Hard Drive delivers massive storage capacity, high performance, and long-term reliability for data centers and enterprise environments.
Best Price for This Product

The Western Digital WD Ultrastar DC HC550 18TB Enterprise Internal Hard Drive is engineered to meet the growing storage demands of modern data centers and mission-critical enterprise systems. Offering an enormous 18TB capacity in a standard 3.5-inch form factor, it enables organizations to maximize storage density while reducing hardware, power, and operational costs.
This drive integrates advanced Energy-Assisted Magnetic Recording (EAMR) technology to improve writability and increase areal density, while the Triple Stage Actuator (TSA) enhances head-positioning accuracy for improved performance and reliability. Together, these innovations allow higher capacity without compromising efficiency.
Key Features
Massive 18TB enterprise-class storage capacity
Designed for hyperscale and enterprise data centers
Energy-Assisted Magnetic Recording (EAMR) for higher areal density
Triple Stage Actuator (TSA) for precise head positioning and improved performance
Sixth-generation HelioSeal® technology for lower power consumption and reduced vibration
High-speed 7200 RPM performance with large cache
Optimized for 24/7, data-intensive workloads
Enterprise-grade durability and long service life
| Brand | WD |
|---|---|
| HDD Category | Enterprise Internal Hard Drive |
| Product Series | Ultrastar DC HC550 |
| Capacity | 18TB |
| Form Factor | 3.5 Inch |
| Interface | SATA |
| Write Speed | Up to 269 MB/s |
| Read Speed | Up to 269 MB/s |
| TBW | Up to 550TB per year workload rating |
| RPM | 7200 RPM |
| WARRANTY | 5 Year Warranty |
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