Synology RXD1215sas 12-Bay NAS Expansion Unit

MX58871 RXD1215sas 12-Bay NAS Expansion Unit
MX58871 RXD1215sas 12-Bay NAS Expansion Unit MX58871 RXD1215sas 12-Bay NAS Expansion Unit MX58871 RXD1215sas 12-Bay NAS Expansion Unit MX58871 RXD1215sas 12-Bay NAS Expansion Unit

Product Info

RXD1215sas: Reliable, Scalable 12-Bay SAS Storage Unit


RXD1215sas is a 12-bay storage expansion unit specifically designed to work with dual Synology RackStation RC18015xs+ Servers. When connected, it delivers the massive scalability and uncompromising resiliency that 24/7 businesses require.

High-availability Cluster Design


By combining the two computing servers and multiple storage units into a single high-availability cluster, RC18015xs+ and RXD1215sas deliver unyielding reliability and data availability. With the active/passive structure, services are automatically switched over to one server if the other unexpectedly goes offline, helping your business avoid costly downtime.


Massive Scalability: Up to 180 Drives


featureUp to fifteen RXD1215sas can be connected to the dual RC18015xs+ computing nodes1, accommodating massive scalability up to 180 drives and maximum raw storage beyond 1PB2. The shared storage architecture eliminates the need for data replication over the network, in addition to drastically reducing deployment costs.

Hardware Redundancy Enhances Uptime

RXD1215sas is equipped with redundant hardware components, such as power supply units, SAS modules, and system cooling fans.

In the event of component failure, the system continues operating normally until replacement parts are installed.



Chassis 2U
Drive Bays 12x 3.5" or 2.5" SATA III, II, or SAS HDD / SSD
(Drives not included)

Supports Hot Swappable Drives
Supports Raid Management through Synology DSM

Max Internal Capacity 96 TB (12x 8TB HDD) Capacity varies by RAID type
External Interface 2x Mini-SAS In ports
2x Mini-SAS Out ports
2x AC Power In ports
System Fan 4x 60mm
Noise Level 48.0 dB(A)
Certification FCC Class A, CE Class A, BSMI Class A
Temperature Operating: 5 ~ 35° C (40 ~ 95° F)
Storage: -20°C to 60°C (-5°F to 140°F)
Relative Humidity 5% ~ 95% RH, non-condensing
Power Input: 100 ~ 240Vac, 50 / 60Hz, Single Phase
Power Supplies 2x 500W
Power Recovery Synchronized with the Synology RackStation
Power Consumption Access: Up to 248W
BTUs: Up to 846.21 BTU / hour
Dimensions 88 x 430 x 692mm
Weight 18.0kg
  1. Two RC18015xs+ and at least one RXD1215sas expansion unit are required to configure and operate. Additional RXD1215sas Expansion Units can be purchased separately.
  2. Raw storage capacity varies depending on hard drive model and individual settings. Hard drives are purchased separately. Learn more about the compatibility of hard drives, please click here.

Package Contents

  • 1x Synology RXD1215sas Storage Expansion Unit
  • 2x Expansion Cables
  • 2x AC Power Cords
  • 1x Accessory Pack
  • 1x Quick Installation Guide