SYNOLOGY HAT5320 4TB CMR 7200rpm 256MB NAS HDD 24x7 281MB/s 3.5" RAID SATA3-6Gbps

The SYNOLOGY HAT5320 drive is purpose-built for demanding NAS systems and RAID arrays that require absolute reliability and uninterrupted performance. Unlike standard office drives, the HAT5320 is optimized for 24-hour-a-day, 7-day-a-week operation and is equipped with specialized firmware for multi-disk environments. With a 4 TB capacity, 7200 RPM spindle speed, and transfer rates up to 281 MB/s, it offers the ideal combination of capacity and performance for both professional data centers and smaller business NAS deployments.

With transfer speeds up to 281 MB/s, the HAT5320 is among the fastest drives in the NAS 24/7 category. The 7200 RPM spindle speed ensures low seek time and quick response for repeated read or write operations. The internal 256 MB cache buffer efficiently buffers data and minimizes latency, which is especially important when multiple clients access the drive simultaneously. The annual workload of 550 TB means the drive is engineered for an average continuous transfer of 150 MB/s over one year – an exceptional indicator of professional deployment.

The SYNOLOGY HAT5320 comes with a 5-year warranty, reflecting the high quality of engineering and the manufacturer's confidence in product durability. The drive undergoes rigorous testing under simulated conditions that mirror real-world deployment in data centers and RAID environments. This warranty gives you peace of mind for long-term operation and minimizes the risk of unplanned downtime. For professional users, the HAT5320 is the optimal choice when data reliability and availability are non-negotiable.

The HAT5320 is engineered with conventional CMR (Conventional Magnetic Recording), ensuring the best compatibility and reliability in RAID environments. The drive is certified for operation across a temperature range of 0–60 °C and features low acoustic noise thanks to optimized spindle design and aerodynamics. Support for "TLER" (Time Limited Error Recovery) ensures that if a read error occurs, the drive immediately informs the RAID controller to prevent timeout situations. All these properties together make the HAT5320 an ideal choice for professionals who don't have time for experimentation.