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Synology Inc. > 
Item#: 9SIA2E113B5890

Synology DX1211 12-Bay Expansion Unit for Increasing Capacity of the Synology DiskStation

  • Plug-n-use Minimizes Downtime
  • Energy-Saving Deep Sleep Mode
  • Managed through the Synology DiskStation Manager (DSM)

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Synology DX1211 delivers an effortless solution for volume expansion and data backup for Synology DiskStation DS2411+/DS3611xs. The DX1211 seamlessly scales up the storage capacity of the DS2411+/DS3611xs by an additional 12 hard drives on-the-fly when connected directly to DS2411+/DS3611xs.

Learn more about the Synology Inc. DX1211




HDD Interface
12 x SATA (12 x Bay)


Form Factor


RAID Management:
- Volume Type: Basic, JBOD, RAID 0, RAID 1, RAID 10, RAID 5, RAID 5+Spare, RAID 6
- RAID Migration: from Basic to RAID 1, Basic to RAID 5, Basic to RAID 5+Spare, RAID 1 to RAID 5, RAID 1 to RAID 5+Spare, RAID 5 to RAID 5+Spare, RAID 5 to RAID 6
- Expand RAID 1, RAID 5, RAID 5+Spare or RAID 6 with Larger Hard Drives
- Expand RAID 5, RAID 5+Spare or RAID 6 by adding Hard Drives
- Managed with the Synology DSM


100-240 VAC 50/60Hz


Operating temperature: 5 degree C to 35 degree C (40 degree F to 95 degree F)
Storage temperature: -10 degree C to 70 degree C (15 degree F to 155 degree F)
5-95% R.H



Dimensions & Weight

13.39" x 11.81" x 10.63"
21.45 lbs.
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Customer Reviews of the Synology Inc. DX1211

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  • Paul D.
  • 2/14/2013 5:50:35 PM
  • Ownership: more than 1 year

5 out of 5 eggsbyer-be-ware is spamming

Pros: byer-be-ware has been spamming all other synology products. He must work for a competitor.

Cons: Not much that I can find. Some of the built in apps could of been done better.

Other Thoughts: I wish the quads cores nas servers came in smaller packages like the 713+. The 713+ cant trans-code fast enough for plex.

1 out of 1 people found this review helpful. Did you? Yes No

  • Brian K.
  • 2/4/2013 10:23:26 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggshorrible

Pros: none unless you consider data loss a good thing?

Cons: Worst technology purchase ever. Stay away. Continually claims volumes "crash" and you lose all data on them. Tried both RAID 5 and 6 no difference in terms of volumes crashing and you lose all of your data. Used same disks in another RAID product and it works perfectly, no issues. Don't make same mistake I did.

Other Thoughts: Absolute garbage of product.

Manufacturer Response:

We apologize for the inconvenience you have experienced. In order for us to further assist you in receiving the best possible experience, we ask of you to get in touch with our in-house support here -

0 out of 6 people found this review helpful. Did you? Yes No

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Home > 
Networking > 
Network Attached Storage (NAS) > 
Desktop NAS > 
Synology Inc. > 
Item#: 9SIA2E113B5890
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