The internal hard drive Synology HAT5310-20T is designed to offer high capacity and reliability in high‑performance storage systems, especially NAS servers and professional environments. With a standard 3.5" form factor and a capacity of 20 TB (20000 GB), it allows you to store large volumes of data, backups and multimedia libraries on a single device, optimizing the system’s physical space. It uses a SATA III interface, compatible with most current chassis and controllers, with transfer speeds of up to 281 Mbit/s, enabling fast access to large files and continuous workflows. Its 7200 rpm HDD technology offers a solid balance between sustained performance and reliability, suitable for 24/7 use in storage enclosures. It includes a 512 MB cache buffer that improves data handling in intensive read and write operations, reducing response times for frequent access. The drive operates on 5–12 V, following common standards for internal storage bays, and its black design matches the look of most professional systems and racks. The operating temperature range of -40 ºC to 70 ºC allows integration in installations with different ambient conditions, provided that the chassis has proper ventilation. This HAT5310-20T model is a high‑capacity, stable‑performance solution for storage infrastructures that require continuous reliability and compatibility with Synology systems and equivalent platforms.