Synology HAT3320-20T - 3.5" SATA HDD, 20 TB

The Synology HAT3320-20T is a high-capacity internal hard drive designed specifically for Synology NAS systems. It uses a SATA 6 Gb/s interface for compatibility with a wide range of storage enclosures and servers. Each unit is built for continuous 24/7 operation and supports environments where multiple users access data simultaneously. The drive is intended as a primary storage component for backup repositories, shared file systems, and large media libraries. It has been tested to handle enterprise-level duty cycles.

It uses 100% Conventional Magnetic Recording (CMR) technology for consistent write performance during heavy data transfers. The drive is rated for a workload of up to 180 TB per year. Administrators can manage it directly through Synology DiskStation Manager (DSM), which supports firmware updates and health monitoring. The drive is tested specifically for Synology storage configurations, so it works without external management tools.

• 20TB total storage capacity.
• 3.5-inch internal form factor.
• 1.2 million hours Mean Time Between Failure (MTBF).
• Sequential read speeds up to 36% faster than comparable third-party hard drives.
• 730g unit weight.