Key features plug n use design for seamless storage space upgrade redundant data paths amp power supplies ensure service uptime sas and sata drives for flexible capacity and balanced performance managed with synology diskstation manager dsm backed with 5 year limited warranty amp synology replacement service synology rx1216sas delivers an effortless solution for volume expansion and data backup for synology rackstation rs18016xs rx1216sas seamlessly scales up the storage capacity of s