Synology HAT5310-20T

A 20TB enterprise-grade 3.5-inch SATA hard drive designed for high-capacity Synology NAS environments, offering 7,200 RPM performance, up to ~281 MB/s sustained transfer speed, and a 512MB cache for smooth large-scale data handling. Built for 24/7 operation, it supports heavy workloads (up to 550 TB/year), has a 2.5 million-hour MTTF rating, and includes features like persistent write cache protection and a 5-year warranty for long-term reliability.