0B47747 | Western Digital Ultrastar HC555 18TB 3.5″ Enterprise Class SAS 12 Gb/s HDD 7200 RPM 512MB Cache EAMR Technology SE Security 5-Year Limited Warranty

The Western Digital Ultrastar HC555 18TB Enterprise SAS Hard Drive delivers exceptional storage capacity and reliability for professional NAS deployments, video surveillance systems, and data-intensive applications. Built with advanced EAMR (Energy-Assisted Magnetic Recording) technology, this enterprise-class drive is engineered to handle demanding 24/7 workloads with superior performance and durability that IT professionals and UniFi Protect users require for large-scale storage solutions.

• 18TB capacity provides massive storage for high-resolution camera recordings and backup systems
• SAS 12 Gb/s interface with transfer rates up to 269MB/s ensures fast data access for multi-stream applications
• 512MB cache and 7200 RPM spindle speed optimize performance for enterprise workloads
• SE (Self-Encrypting) security protects sensitive data with hardware-level encryption
• 5-year limited warranty backed by Western Digital’s enterprise-grade reliability standards

Designed for seamless integration with existing storage infrastructure, this Ultrastar drive operates reliably across a wide temperature range (5°C to 60°C) and features field-proven hardware and firmware for maximum uptime. Whether you’re building a robust UniFi Protect storage solution, expanding your data center capacity, or deploying a mission-critical backup system, the HC555 combines the performance and reliability needed for professional environments where data integrity and continuous operation are non-negotiable.