Synology DX1215 delivers an effortless volume expansion & data backup solution for selected Synology Disk Station servers by providing an additional 12 drive slots with SATA III 6 Gb/s interface support. Highlight Plug-&-Use design for seamless storage space upgrade Online volume expansion SATA III 6 Gb/s interface support Perfect for local backup solution Energy-saving hibernation mode Managed from Synology Disk Station Manager (DSM) Volume Expansion & Backup When drive capacity is running low on a Synology Disk Station, Synology DX1215 provides an easy way to immediately scale capacity by providing an additional 12 drive slots. A RAID volume on the Synology Disk Station can be expanded directly without having to reformat the existing drives, ensuring the Synology Disk Station continues providing services during capacity expansion. Synology DX1215 can serve as a dedicated local backup solution for a Synology Disk Station. When created as a separate volume, the Synology DX1215 provides a great backup solution for local drives in case of system failure. Reliable Plug-&-Use Design DX1215 securely connects to Synology’s Disk Station servers with a specially designed expansion cable, ensuring easy connection & maximum data throughput. The 6 Gb/s connection speed allows the drives in the connected Synology DX1215 to operate as the internal ones of Synology Disk Station. Green & Easy to Manage Hibernation mode 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. DX1215 will also smartly power on/off with the attached Disk Station, so no user intervention is needed to keep this system running smartly & efficiently.