Synology dx213 delivers an effortless solution for volume expansion data backup for selected synology diskstation modelsr key featuresr r online volume expansionr dedicated local backup solutionr reliable plug n use designr auto power onoff with diskstation modelsr r expansion unit for increasing capacity of the synology diskstationr synology dx213 delivers an effortless solution for volume expansion and data backup for selected synology diskstation models the dx213 seamlessly scales up the