Synology HAT5320-4T 4 TB 3.5" 7200 RPM Enterprise Serial ATA HDD

The Synology HAT5320-4T is a 3.5-inch internal enterprise hard disk drive designed specifically for Synology network-attached storage setups. It provides a storage capacity of 4 TB using a standard Serial ATA interface capable of data transfer rates up to 6 Gbps. This model is constructed for continuous 24/7 operation in environments requiring centralized file management, active backups, and large-scale deployments. By integrating directly with Synology DiskStation Manager, the drive allows administrators to perform automatic firmware updates without interrupting system operations.

Internally, the hard drive operates at a spindle speed of 7,200 RPM and is equipped with a 512 MB cache buffer to manage fluctuating workloads. It delivers sustained transfer rates of up to 281 MiB/s, suitable for steady data throughput in demanding networked environments. The unit measures 101.8 mm in width, 26.1 mm in height, and 147 mm in depth, with a total weight of 690 g.

• Supports hot-swapping for hardware maintenance without powering down
• Handles an annual workload rate limit of up to 550 TB
• Operates with a Mean Time Between Failures (MTBF) of 2,000,000 hours
• Consumes 7.29 watts during active read and write processes
• Draws 3.49 watts of power while in an idle state