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Synology Expansion Unit RX1225RP 12-Bays – RX1225RP
Brand: Synology
AED 8,035.00 excl. VAT
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AED 8,035.00 excl. VAT
Best Price: AED 7,834.13 on Bank Transfer / Cash Payment (-AED 200.88)
Estimated delivery between Mar 14, 2026 - Mar 21, 2026
For urgent delivery, please contact sales before ordering. Orders usually ship as per the estimated delivery date in certain case backorders may take 4–12 weeks. Images are for illustration only and may differ from the actual item.
Synology Expansion Unit RX1225RP 12-Bays – RX1225RP
Expansion Unit Rackmount 12 bays (SATA drive only), please be aware of compatible models (https://www.synology.com/en-global/products/expansion)

Expansion Unit RX1225RP
Reliable storage expansion with redundant power
Overview
Features
Seamless 12-bay capacity expansion
Add 12 additional storage bays to compatible RackStation systems with a single RX1225RP without system or service downtime.

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
Get up and running without delay thanks to RX1225RP’s plug-and-play design. Easily expand and manage your storage using the intuitive Storage Manager in Synology DiskStation Manager.


Performance backed by Synology drives
Designed for Synology systems, Synology drives deliver consistent performance and unmatched reliability for your deployments.1
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Detailed Tech Specs
Hardware Specs
|
Applied Models |
Supports creating volumes across different units | RS2825RP+ |
|---|---|---|
| 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 |
Drive Bays | 12 |
| Drive Type (See all supported drives) |
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| Hot Swappable Drive* | ||
| RAID Management through Synology DSM | ||
| Notes |
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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 RackStation |
| Power Supply Unit / Adapter | 550 W | |
| AC Input Power Voltage | 100V to 240V AC | |
| Power Frequency | 50/60 Hz, Single Phase | |
| Power Consumption* | 92.13 W (Access) 33.44 W (HDD Hibernation) | |
| British Thermal Unit | 314.16 BTU/hr (Access) 114.03 BTU/hr (HDD Hibernation) | |
| Redundant Power Supply | ||
| Notes | For more information on how power consumption is measured, refer to this article. | |
|
Temperature |
Operating Temperature | 0°C to 35°C (32°F to 95°F) |
| Storage Temperature | -20°C to 60°C (-5°F to 140°F) | |
| Operating humidity | 8% to 80% RH | |
| Storage Humidity | 5% to 95% RH | |
|
Others |
System Fan | 80 mm x 80 mm x 4 pcs |
| Easy Replacement System Fan | ||
| Noise Level* | 39.5 dB(A) | |
| Notes | Noise Level Testing Environment: Fully loaded with Synology SAT5200-480G SSD in the idle state. Two G.R.A.S. Type 40AE microphones, each set up 1 meter away from the Synology NAS at the front and rear. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8% | |
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Certification |
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Warranty |
5 Years | |
| Notes | The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more) | |
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Environment & Packaging |
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Environment |
RoHS Compliant | |
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Packaging Content |
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Optional Accessories |
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Notes:
- Model specifications are subject to change without prior notice.
- 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.
- The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations.
- If usage requirements exceed the specifications above, please contact our regional partners for professional advice.

















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