When drive capacity is running low on a Synology 1U Rack Station, Synology RX415 provides an easy way to immediately scale capacity by providing an additional 4 slots. A RAID volume on the Synology Rack Station can be expanded directly without having to reformat the existing drives, ensuring the Synology Rack Station continues providing services during capacity expansion. Synology RX415 can serve as a dedicated local backup solution for a Synology Rack Station. When created as a separate volume, the Synology RX415 provides a great backup solution for local drives in case of system failure. Plug-&-Use Design for Seamless Storage Space Upgrade Online Volume Expansion 12-Inch Depth to Fit in 2-Post Racks & Wall Mount Racks Energy-Saving Deep Sleep Mode Managed from Synology Disk Station Manager (DSM) Deep Sleep can be manually configured to start automatically when the system has been inactive for a period of time. This not only saves energy but also extends the lifespan of hard drives. RX415 will also smartly power on/off with the attached Rack Station, so no user intervention is needed to keep this system running smartly & efficiently.