The Synology HAS5300 and HAS5310 series are high-performance 3.5" SAS enterprise hard drives built for mission-critical reliability. Available in capacities from 8TB to 20TB, these 7,200 RPM drives deliver sustained transfer rates up to 281 MB/s. Optimized for 24/7 operation within high-availability clusters and virtualization environments, they are specifically engineered for use in Synology SA series systems. With low power consumption and a high tolerance for continuous workloads, these SAS-3 drives provide the consistent performance and data integrity required for large-scale enterprise storage and backup repositories.