Synology rx1214rx1214rp delivers an effortless solution for volume expansion and data backup for synology rackstation the rx1214rx1214rp seamlessly scales up the storage capacity of the synology rackstation by an additional 12 hard drives on the fly when connected directly to an expansion cable plug n use design for seamless storage space upgrade online volume expansion sata iii 6gbs interface support redundant power supplies ensure service uptime rx1214rp only energy saving deep sleep m