Expansion Unit DX525Seamless capacity expansion for Synology DiskStationStorage expansion without downtimeEasily add five additional drive bays to your Synology DiskStation. The DX525 supports both 2.5" and 3.5" SATA drives and features plug-and-play setup and hot-swap capability for uninterrupted operation during capacity expansion.Dedicated local backup solutionThe Synology DX525 provides a dedicated local backup solution for your Synology DiskStation. When configured as a separate volume, it safeguards data on its local disks in case of system failure.Online volume expansionManaged through the host NAS's DiskStation Manager (DSM), the DX525's additional bays are immediately available upon connection. On-the-fly volume expansion ensures uninterrupted service and storage expansion on the host.