Synology RX418 4-Bay Diskless Expansion Unit

The Synology RX418 is a 4-bay expansion unit engineered to extend the storage capacity of compatible Synology 1U RackStation devices. Its plug-and-play design means you can connect it to your existing NAS and begin expanding volumes without complex configuration or system downtime. Managed entirely through Synology DiskStation Manager (DSM), the RX418 integrates seamlessly into your existing storage workflow, supporting the same RAID configurations and data protection features you already rely on.

At just 325 mm deep, the RX418's short-depth chassis is purpose-built for environments where space is at a premium, including 2-post racks, wall mount racks, and compact server closets. The unit's energy-saving deep sleep mode powers down idle drives to reduce electricity costs and extend drive lifespan. With four SATA bays ready to accept 3.5-inch or 2.5-inch drives, the RX418 provides a practical expansion path for businesses and home lab users who need additional capacity without investing in a second full NAS.