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 and; 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..