5 Reasons the Synology DS920+ Expansion Port Matters

It adds 5 extra bays The DX517 expansion unit turns a 4-bay DS920+ into a 9-bay system without replacing the NAS.

It avoids a full upgrade You get more storage capacity without buying a larger, more expensive 8-bay NAS.

It scales storage gradually Add one expansion unit when you need it, not all at once.

It keeps the same software Expansion bays work seamlessly with Synology’s DSM, so no new setup or migration is needed.

It’s a practical middle ground The 4-to-9 bay jump is a smart compromise between compact and enterprise-sized appliances.