Expansion Unit RX1223RP
Reliable storage expansion with redundant power
Overview:
Seamless 12-bay capacity expansion
Add up to 96 storage bays to compatible units with Synology Expansion Unit RX1223RP. Enlarge or create new volumes without system or service downtime thanks to online storage expansion.
- Capacity Expansion
Add up to 12 additional 3.5”/2.5” SATA HDD/SSD drives - Simple Configuration
Gain storage expansion in minutes using Synology DSM’s unified tools - Hardware Redundancy
Redundant power supply prevents single points of failure - Designed for Synology Drives
Synology drives provide the upmost in reliability and integration - Long-Term Support
Backed by Synology’s 5-year limited warranty
Features:
Expand storage on the fly
RX1223RP provides simple storage expansion with 12 drive bays for 3.5”/2.5” SATA HDD/SDD drives.
Up to eight RX1223RP expansion units can be added to compatible serves for up to 1.7 petabytes of additional raw storage.
Redundant design for high reliability
Modular drive trays and system fans enable easy and quick replacement, reducing the impact of maintenance on service availability. Redundant power supply units keep your data online in the event one power source fails.


Simple deployment and management
Plug-and-play design means the RX1223RP is ready to use as soon as it is connected to a host device.
Online storage expansion and easy storage management in Synology DiskStation Manager’s (DSM) simplify configuration and management.
Hardware Redundancy for Increased Reliability
Minimize downtime thanks to modular drive trays and system fans that you can replace quickly and easily in case of malfunction, and eliminate single points of failure with dual power supplies
Product Views:






Technical Specifications:
Hardware Specifications: | |
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Applied Models |
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Storage | |
Drive Bay(s) | 12 |
Compatible Drive Type |
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Hot Swappable Drive | |
RAID Management through Synology DSM | |
External Ports | |
Expansion Port | 1 |
Appearance | |
Size (Height X Width X Depth) | 88 mm x 430.5 mm x 692 mm |
Size (Height X Width X Depth) (with server ears) | 88 mm x 482 mm x 724 mm |
Weight | 13.9 kg |
Rack Installation Support | 4-post 19" rack (Synology Rail Kit - RKS-02) |
Notes | The rail kit is sold separately |
Power | |
Power Recovery | Synchronized with the Synology DiskStation |
Power Supply Unit / Adapter | 550W |
AC Input Power Voltage | 100V to 240V AC |
Power Frequency | 50/60 Hz, Single Phase |
Power Consumption* |
93.59 W (Access) 30.73 W (HDD Hibernation) |
British Thermal Unit |
319.34 BTU/hr (Access) 104.86 BTU/hr (HDD Hibernation) |
Note | Power consumption is measured when it is fully loaded with Western Digital 1TB WD10EFRX hard drive(s). |
Temperature | |
Operating Temperature | 5°C to 40°C (40°F to 104°F) |
Storage Temperature | -10°C to 70°C (-15°F to 155°F) |
Relative Humidity | 5% to 95% RH |
Others | |
System Fan | 80 mm x 80 mm x 4 pcs |
Easy Replacement System Fan | |
Noise Level | 54.3 dB(A) |
Note | Noise 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% | Certification |
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Warranty | 5 Years |
Environment & Packaging | |
Environment | RoHS Compliant |
Packaging Content |
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Optional Accessories |
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*Model specifications are subject to change without notice. Please refer to www.synology.com for the latest information.
Documentation:
Download the Synology Expansion Unit RX1223RP Datasheet (PDF).

Synology has you covered
The RX1223RP is backed by Synology's 5-year limited warranty, including technical support and hardware replacement services to maximize your return on investment and ensure continued high-quality performance.
- All Prices are Inclusive of GST
- Pricing and product availability subject to change without notice.