Synology DX1215 12-Bay Storage Expansion Unit for DiskStation

  Synology DX1215 12-Bay Storage Expansion Unit for DiskStation
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12-Bay Volume Expansion w/ Auto Power On/Off for DiskStation | Hot-swappable Design
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9 In StockNew5 Year

Drive Bay(s)
Chassis Profile
Power Protection
NoneRedundant Power Supply
External Ports
Synology DX1215 12-bay Customizable Storage Expansion for DS3615xs / DS2015xs / DS3612xs / DS3611xs / DS2413+


Synology DX1215

12-Bay Expansion Unit scales up your Synology DiskStation capacity effortlessly


Synology DX1215 delivers an effortless volume expansion and data backup solution for selected Synology DiskStation servers by providing an additional 12 drive slots with SATA III 6Gb/s interface support. Synology DX1215 is backed with Synology’s 5-year limited warranty.




  • Plug-and-Use design for seamless storage space upgrade
  • Online volume expansion
  • SATA III 6Gb/s interface support
  • Perfect for local backup solution
  • Energy-saving hibernation mode
  • Managed from Synology DiskStation Manager (DSM)





Volume Expansion & Backup

When drive capacity is running low on a Synology DiskStation, Synology DX1215 provides an easy way to immediately scale capacity by providing an additional 12 drive slots. A RAID volume on the Synology DiskStation can be expanded directly without having to reformat the existing drives, ensuring the Synology DiskStation continues providing services during capacity expansion.


Synology DX1215 can serve as a dedicated local backup solution for a Synology DiskStation. When created as a separate volume, the Synology DX1215 provides a great backup solution for local drives in case of system failure.



Reliable Plug-and-Use Design

DX1215 securely connects to Synology's DiskStation servers with a specially designed expansion cable, ensuring easy connection and maximum data throughput. The 6Gb/s connection speed allows the drives in the connected Synology DX1215 to operate as the internal ones of Synology DiskStation.



Green & Easy to Manage

Hibernation mode can be manually configured to start automatically when the system has been inactive for a period of time. This not only saves energy but also extends the lifespan of hard drives. DX1215 will also smartly power on/off with the attached DiskStation, so no user intervention is needed to keep this system running smartly and efficiently.

DX1215 comes with a fast detachable fan module with two 120 X 120mm fans and screwless drive trays, making system components replacement fast and tool-free.


HighlightsSynology DX1215 12-bay Customizable Storage Expansion for DS3615xs / DS2015xs / DS3612xs / DS3611xs / DS2413+
Hardware Specifications
Supported ModelsDS3615xs
NoteDSM version requirement: 5.1-5004 or later version
Drive Bay(s)12
Compatible Drive Type3.5" SATA(III) / SATA(II) HDD
Maximum Internal Raw Capacity72 TB (6 TB HDD X 12) (Capacity may vary by RAID types)
Hot Swappable DriveYes
RAID Management through Synology DSMYes
External Ports
Infiniband port1
Size270 mm X 300 mm X 340 mm
Weight9.02 kg
Power RecoverySynchronized with the Synology DiskStation
Power Supply Unit / Adapter500W
AC Input Power Voltage100V to 240V AC
Power Frequency50/60 HZ, Single Phase
Power Consumption*51.23W (Access)
21.71W (HDD Hibernation)
NotePower consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s).
Operating Temperature5°C to 35°C (40°F to 95°F)
Storage Temperature-20°C to 60°C (-5°F to 140°F)
Relative Humidity5% to 95% RH
System Fan120 mm X 120 mm X 2 pcs
Easy Replacement System FanYes
Noise Level*27.2 dB(A)
NoteNoise Level Testing Environment: Fully loaded with Seagate 1TB ST31000520AS hard drive(s) in idle; Two G.R.A.S. Type 40AE microphones, each set up at 1 meter away from the Synology NAS front and rear; Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%
CertificationFCC Class B
CE Class B
BSMI Class B
Warranty5 Years
Environment & Packaging
EnvironmentRoHS Compliant
Packaging ContentMain Unit X 1
User's Guide X 1
Accessory Pack X 1
AC Power Cord X 1
Expansion Cable: Infiniband X 1
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