Expansion Unit DX1215II

Plug-and-play storage expansion for Synology DiskStation

DX1215II
DX1215II

Easily add 12 bays to your DiskStation

With its 12-bay desktop form factor, the DX1215II provides generous storage expansion for Synology DiskStation1 whenever needed with minimal impact on the deployment footprint.

Online volume and storage expansion

Add a new volume to your storage, or seamlessly expand RAID volumes on Synology DiskStation without reformatting drives with online volume expansion through DiskStation Manager (DSM) to minimize service disruptions.

Online volume and storage expansion

Expand DiskStation with Synology drives

Developed in tandem with Synology storage systems, Synology enterprise storage drives deliver proven interoperability and high reliability through rigorous validation and compatibility testing.

Simple setup and management

Plug-and-play design makes adding the DX1215II to an existing DiskStation simple. Unified drive management through DSM ensures health monitoring, storage allocation, and maintenance tasks are centralized and easily accessible to administrators.

Simple setup and management

Hardware Specifications

Applied Models

Applied Models

Supports creating volumes across different units
  • FS series:FS1018
  • 19 series:DS2419+, DS2419+II
  • 18 series:DS3018xs
  • 17 series:DS3617xs, DS3617xsII
  • 15 series:DS3615xs, DS2415+, DS2015xs
  • 13 series:DS2413+
  • 12 series:DS3612xs
  • 11 series:DS3611xs, DS2411+
Notes To have better performance, we recommend creating storage volumes physically located within the same NAS or Expansion Unit, rather than creating volumes across your NAS and Expansion Unit.

Storage

Storage

Drive Bays 12
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • 2.5" SATA SSD
Maximum Internal Raw Capacity 192 TB (16 TB drive x 12) (Capacity may vary by RAID types)
Hot Swappable Drive
RAID Management through Synology DSM
Notes It is strongly recommended that you only install drives listed on your device's compatibility list. Storage pool and volume creation processes may fail when using unverified drives. Synology is unable to provide technical support for devices using unsupported components.

External Ports

External Ports

Expansion Port 1

Appearance

Appearance

Size (Height x Width x Depth) 270 mm x 300 mm x 340 mm
Weight 9.02 kg

Power

Power

Power Recovery Synchronized with the Synology DiskStation
Power Supply Unit / Adapter 550 W
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 51.23 W (Access)
21.71 W (HDD Hibernation)
British Thermal Unit 174.69 BTU/hr (Access)
74.03 BTU/hr (HDD Hibernation)
Notes Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s).

Temperature

Temperature

Operating Temperature 5°C to 35°C (40°F to 95°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F)
Relative Humidity 5% to 95% RH

Others

Others

System Fan 120 mm x 120 mm x 2 pcs
Easy Replacement System Fan
Noise Level* 27.2 dB(A)
Notes Noise Level Testing Environment: Fully loaded with Seagate ST2000VN000 hard drive(s) in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology expansion unit at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%.

Certification

Certification

  • FCC
  • CE
  • BSMI
  • EAC
  • RCM
  • KC

Warranty

Warranty

5 Years
Notes The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)

Environment & Packaging

Environment

Environment

RoHS Compliant

Packaging Content

Packaging Content

  • Main Unit X 1
  • User's Guide X 1
  • Accessory Pack X 1
  • AC Power Cord X 1
  • Expansion Cable: Infiniband X 1

Optional Accessories

Optional Accessories

Notes:

  1. Model specifications are subject to change without prior notice.
  2. The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time.
  3. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
  4. If usage requirements exceed the specifications above, please contact our regional partners for professional advice.