Expansion

Running out of space? Scale up your storage with additional expansion units.

DX517

DX517

5 bays
  • For 2.5” and 3.5” SATA drives
  • Hot-swappable drive tray design
  • 2.4W in HDD Hibernation
DX1215II

DX1215II

12 bays
  • For 2.5” and 3.5” SATA drives
  • Online volume expansion
  • 21.71W in HDD Hibernation
DX1222

DX1222

12 bays
  • For 2.5" and 3.5" SATA drives
  • Online volume expansion
  • 16.25 W in HDD Hibernation
RX418

RX418

4 bays
  • For 2.5” and 3.5” SATA drives
  • Online volume expansion
  • 12-inch depth chassis design
Why Synology?
Find out from our customers.
View all customer stories
Holiday Inn Riyadh

Holiday Inn Riyadh

"With Synology NAS in our organization, we don't have to worry about hotel surveillance at all."
Premium Automobiles

Premium Automobiles

"Surveillance Station is simply so feature rich and its performances exceed our expectations."
Jetstar Pacific Airlines

Jetstar Pacific Airlines

"We are very satisfied with Synology products, and especially with the Hyper Backup package that provides a cost-effective backup solution which can..."
Unilever

Unilever

“Through the use of Synology’s products, we have found an excellent solution which eliminates the problems that prevailed with the previous system."