Synology FX2421 - NAS storage expansion unit, Black

The Synology FX2421 is a 24-bay, 2.5-inch rackmount expansion unit designed to increase the capacity of compatible FlashStation systems. It features twenty-four drive bays that accommodate SAS or SATA storage media. The unit connects via a SAS interface to support data throughput for enterprise workloads. It is intended for use in environments that require increased volume capacity for virtualization or large-scale data backups, allowing storage expansion without replacing existing server hardware.

The system is powered by dual 500 W power supply units to ensure continued operation if one module fails. Four 80 mm fans maintain airflow across the drives for thermal management. Typical power consumption during operation is 190.99 W. The hot-swappable bays allow for drive replacement or maintenance while the system remains active, reducing the risk of hardware-related downtime.

• 92.16 TB maximum capacity: provides space for data expansion within a single unit.
• 57 dB noise level: sound output during standard operational loads.
• 14.5 kg chassis weight: mass of the empty enclosure for rack load calculations.
• 724 mm equipment depth: requires a deep-rack server cabinet for installation.
• 482 mm chassis width: complies with standard server rack mounting specifications.
• Black exterior finish: matches common data centre hardware.