Western Digital Ultrastar DC HC550 18TB 3.5" Enterprise Internal Hard Drive

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