Western Digital Ultrastar HC555 18TB Internal Data Center Hard Drive, WUH722018CLE6L4, Part Number 0B48723

Western Digital Ultrastar WUH722018CLE6L4 18 TB Hard Drive - 3.5" Internal - SATA - Energy-assisted Magnetic Recording (EAMR) Method

Engineered for demanding data center workloads

The Western Digital Ultrastar HC555 18TB internal hard drive is designed to deliver high-capacity storage, dependable performance, and proven reliability in 24/7 multi-user server environments. Built on the field-proven Ultrastar platform, model WUH722018CLE6L4 provides ample space for large-scale data repositories, video archives, image libraries, backup systems, and other demanding applications. Its 3.5-inch form factor supports straightforward integration into compatible server and data center storage systems running Linux.

Efficient capacity and responsive performance

Western Digital energy-assisted perpendicular magnetic recording technology helps increase storage density while supporting lower total cost of ownership. A 512 MB cache buffer enables responsive data handling, while the 7,200 RPM rotational speed provides consistent performance for data-intensive operations. The drive uses non-volatile magnetic storage to retain data without continuous power, making it suitable for enterprise storage environments that require dependable access and long-term data preservation.

Designed for reliability and integration

The Ultrastar HC555 is built to simplify qualification and adoption for organizations using established Western Digital and HGST storage platforms. HelioSeal technology creates a stable helium-filled internal environment that helps reduce power consumption and supports high-capacity operation. A Triple-Stage Actuator improves head positioning and control, while integrated rotation vibration sensors anticipate vibration disturbances. Multi-axis shock sensors and dynamic fly height technology help detect and compensate for subtle shocks, supporting consistent performance and data protection in densely populated server environments.

Enterprise-ready storage for scalable systems

With 18TB of capacity, the Western Digital Ultrastar HC555 offers a practical foundation for expanding storage infrastructure without adding unnecessary complexity. Its combination of high density, efficient operation, vibration management, and field-proven engineering makes it well suited for servers, data centers, archival storage, and other always-on environments. Part number 0B48723 identifies this enterprise hard drive for compatibility and procurement purposes.

Features:

• 18TB capacity provides extensive space for data center repositories, video, image, backup, and archival workloads
• 512 MB cache buffer supports responsive data handling and consistent performance
• 7,200 RPM rotational speed delivers dependable performance for demanding server applications
• 3.5-inch internal form factor enables integration with compatible servers and storage systems
• Energy-assisted perpendicular magnetic recording technology supports high storage density and efficient operation
• HelioSeal helium technology helps provide a stable internal environment and a low power profile
• Triple-Stage Actuator improves head positioning, track control, and operational dependability
• Rotation Vibration sensors and multi-axis shock sensors help protect performance and data in demanding environments
• Linux compatibility supports deployment in compatible enterprise server and data center systems