Synology RX418 4-Bay Expansion Device (HD-RX418)

The Synology RX418 is a 4-bay expansion unit that seamlessly extends storage capacity for compatible Synology NAS systems. This compact device supports 3.5″ and 2.5″ SATA drives up to 18TB each, delivering up to 72TB of additional storage. Key features include tool-free drive installation, hot-swappable bays for zero-downtime maintenance, and efficient cooling with dual 92mm fans. The RX418 connects via eSATA for reliable high-speed data transfer and integrates transparently with DiskStation Manager (DSM) for unified storage management. Its space-efficient design makes it ideal for growing businesses and power users who need scalable storage without investing in an entirely new NAS system, offering exceptional value through modular expansion capabilities.