The Synology RX418 is a 4-bay 1U rackmount expansion unit designed to add storage capacity to compatible Synology RackStation NAS systems. It supports 3.5 inch SATA HDDs, 2.5 inch SATA HDDs and 2.5 inch SATA SSDs, with hot-swappable drive bays and direct management through Synology DiskStation Manager. Buy the Synology RX418 from our website for a practical storage expansion solution for compatible Synology NAS environments.
Synology RX418 4-Bay 1U Rackmount Expansion Unit provides four additional SATA drive bays for compatible Synology RackStation systems. The unit connects to the host NAS through an eSATA expansion port and allows installed drives to be managed through Synology DiskStation Manager without requiring additional software.
The RX418 is suitable for expanding available storage or providing a dedicated local backup destination for compatible Synology RackStation systems. Its 1U rackmount form factor makes it suitable for server rooms and rack-based storage installations where efficient use of rack space is important.
Performance tier: Professional rackmount storage expansion
Uses: NAS storage expansion, local backup storage, business file storage, rackmount storage infrastructure
The Synology RX418 is a dedicated storage expansion unit designed for compatible Synology RackStation NAS systems. Its 1U rackmount chassis contains four drive bays, allowing additional SATA storage to be connected to the host NAS while maintaining a compact rack-based installation.
The RX418 supports 3.5 inch SATA hard disk drives, 2.5 inch SATA hard disk drives and 2.5 inch SATA solid state drives. The four drive bays support hot-swappable drives, making it possible to replace compatible drives without requiring the expansion unit to be removed from the rack. RAID management is handled through Synology DiskStation Manager when connected to a supported Synology NAS.
Connection to the compatible RackStation is provided through one eSATA expansion port. Once connected, drives installed in the RX418 can operate as part of the connected Synology storage environment and can be managed directly through DSM. The unit can also be used as a dedicated local backup destination for compatible Synology RackStation systems.
The 1U chassis measures 44 mm high, 430.5 mm wide and 290 mm deep without rack mounting kits. With the server ears fitted, the dimensions are 44 mm high, 480 mm wide and 325 mm deep. The RX418 weighs 4.28 kg and uses three 40 mm x 40 mm x 20 mm system fans for cooling.
The Synology RX418 provides a straightforward way to increase storage capacity on compatible Synology RackStation systems while maintaining a compact rackmount design.
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.
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Specifications and features | |
| 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 | 5degreesC to 35degreesC (40degreesF to 95degreesF) |
| Storage Temperature | -20degreesC to 60degreesC (-5degreesF to 140degreesF) |
| 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: 24.25-25.75degreesC; 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 | |
The Synology RX418 is used to expand the available storage of compatible Synology RackStation NAS systems or provide a dedicated local backup destination.
The RX418 has four drive bays and supports 3.5 inch SATA HDDs, 2.5 inch SATA HDDs and 2.5 inch SATA SSDs.
The officially listed compatible models include RS818 , RS818RP , RS816, RS815 , RS815RP and RS815. Synology also lists additional later RackStation models as compatible, so compatibility should be checked against the specific NAS model and DSM version.
Yes. The RX418 supports hot-swappable drives for compatible SATA storage devices.
The RX418 connects to a compatible Synology RackStation using its single eSATA expansion port and the supplied expansion cable.
Yes. On supported Synology systems, drives installed in the RX418 can be managed through Synology DiskStation Manager.
Yes. The RX418 uses a compact 1U rackmount chassis and supports installation in compatible 19 inch 4-post racks and direct mounting in 2-post racks.
No. Storage drives are not included and must be purchased separately. Compatible drives should be selected according to the Synology compatibility list for the connected NAS and expansion unit.
The RX418 measures 44 x 430.5 x 290 mm without rack mounting kits. With server ears, the dimensions are 44 x 480 x 325 mm.
The Synology RX418 weighs 4.28 kg.
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