When running out of storage capacity on the synology 2u rackstation synology rx1217 provides an easy way to immediately scale capacity by additional 12 drives the raid volume on the synology rackstation can be expanded directly without having to reformat the existing drives ensuring the synology rackstation continues its service during the capacity expansion synology rx1217 can be used as a dedicated local backup solution for the synology rackstation when created as a separate volume rx121