Synology DX517 5 Bay Desktop NAS Expansion Enclosure

Key Features Online volume expansion Dedicated local backup solution Hot swappable drive tray design Synchronised system operation with DiskStation Synology DX517 offers simple storage capacity expansion solution for your DiskStation through its intuitive plug n use design. DX517 allows you to instantly scale up to 5 additional hard drives, so that you can expand RAID volume online or deploy the drives as a dedicated local backup destination for your Diskstation.