Synology RX418, Synology 4-Bay 1U expansion unit for RS818(RP)+, RS815(RP)+, RS816, RS815
NAS - Enclosures for NAS / no drives included
Features:
Storage capacity expansion
When the storage capacity on Synology 1U RackStation reaches its limit, Synology expansion unit RX418 provides easy capacity expansion by adding 4 3.5"/2.5" SATA drives to the system. Synology RX418 can also be used as a dedicated local backup destination of Synology 1U RackStation for comprehensive data protection.
Reliable plug-and-play design
Simply connect Synology RX418 to corresponding Synology RackStation and it is ready to use. Drives in the connected Synology RX418 operate as though they were internal to the connected Synology NAS and can be managed directly by Synology DiskStation Manager (DSM), with no additional software installation required.
Green and easy to manage
Award-winning Synology DSM provides an intuitive user interface for easy system management. Drive hibernation can be configured in DSM to take effect automatically when the system has been inactive for a period of time. This not only saves energy but also extends the lifespan of the installed drives.
Specifications:
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Specifications![]() | |
| Product Code | Synology RX418![]() |
| Hardware Specifications | |
| Applied Models | RS818(RP)+ |
| RS815(RP)+ | |
| RS816 | |
| RS815 | |
| Some models support independent volumes creation only. Please | |
| Note | DSM version requirement: 6.1.4-15217-3 or later version |
| Storage | |
| Drive Bays | 4 |
| Compatible Drive Type | 3.5" SATA HDD |
| 2.5" SATA HDD | |
| 2.5" SATA SSD | |
| Maximum Internal Raw Capacity | 48 TB (12 TB drive x 4) (Capacity may vary by RAID types) |
| Hot Swappable Drive | Yes |
| RAID Management through Synology DSM | Yes |
| External Ports | |
| eSATA port | 1 |
| Appearance | |
| Size (Height x Width x Depth) | 44 mm x 480 mm x 325 mm |
| Weight | 4.28 kg |
| Power | |
| Power Recovery | Synchronized with the Synology RackStation |
| Power Supply Unit / Adapter | 100W |
| AC Input Power Voltage | 100V to 240V AC |
| Power Frequency | 50/60 Hz, Single Phase |
| Power Consumption | 23.26 W (Access) |
| 6.39 W (HDD Hibernation) | |
| British Thermal Unit | 79.42 BTU/hr (Access) |
| 21.82 BTU/hr (HDD Hibernation) | |
| Note | Power consumption is measured when fully loaded with Western Digital 1TB WD10EFRX hard drive(s). |
| Temperature | |
| Operating Temperature | 5°C to 35°C (40°F to 95°F) |
| Storage Temperature | -20°C to 60°C (-5°F to 140°F) |
| Relative Humidity | 5% to 95% RH |
| Others | |
| System Fan | 40 mm x 40 mm x 3 pcs |
| Noise Level | 25.1 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 | FCC |
| CE | |
| BSMI | |
| EAC | |
| VCCI | |
| RCM | |
| KC | |
| Environment & Packaging | |
| Environment | RoHS Compliant |
| Packaging Content | Main Unit X 1 |
| User's Guide X 1 | |
| Accessory Pack X 1 | |
| AC Power Cord X 1 | |
| Expansion Cable: eSATA X 1 | |
| Optional Accessories | Synology RKS1317 - Rail Kit Sliding |
| Synology RKM114 - Rail Kit Mounted | |
Sold by ComX Computers
Specifications are subject to change without notice. E&OE. Prices are a guide only, and are valid on 2026-07-24 only, subject to stock being available. The specifications displayed above applies to the the entrie range, and may not apply to this specific model. Kindly note that options CANNOT be changed for most models, and some options are not available in South Africa.