Synology Expansion Unit DX517 5-Bay 3.5" Diskless Expansion NAS ( Compatible with Selected models)

Synology Expansion Unit DX517 5-Bay 3.5" Diskless Expansion NAS ( Compatible with Selected models) 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 yourDiskstation. Synology DX517 is backed by Synology's 3-year limited warranty. Extended Warranty - Extend warranty from 3 years to 5 Years with the additional purchase of EW201 ( Extended Warranty license must be registered at the same time as the NAS warranty) Synology Live Chat available - https://www.synology.com/en-global Online Volume Expansion Dedicated Local Backup Solution Reliable Plug-n-use Design Hot-swappable HDD Design Adopts Marvell 88SM9705 DS1819+, DS1817+, DS1817, DS1815+2, DS1618+, DS1517+, DS1517, DS1515+2, DS1515, DS1019+, DS918+, DS916+2, DS718+, DS716+, DS716+II, NVR1218 Independent volumes only: DS415+, DS218+, DS216+, DS216+II