Synology RX418

Overview

The Synology RX418 is a 4-bay rackmount expansion unit designed to increase storage capacity for compatible Synology RackStation NAS devices. It connects via a single eSATA cable, allowing you to add four additional SATA drives without replacing your existing hardware. The unit supports both 3.5 inch and 2.5 inch hard drives or solid-state drives, and its hot-swappable bays enable drive replacement or upgrades without interrupting server operation. With a compact 12 inch depth and quiet operation at 25.1 dBA, it fits well in standard or wall-mounted racks and maintains a low noise profile suitable for small server rooms.

Key features

• Four additional SATA drive bays expand your NAS storage seamlessly through a single eSATA connection
• Supports both 3.5 inch and 2.5 inch HDDs and SSDs, offering flexibility in drive choice
• Hot-swappable drive trays allow you to replace or upgrade drives without downtime, keeping your system online
• Managed entirely through Synology DiskStation Manager, providing a familiar and unified interface for volume creation, RAID setup, and snapshot scheduling
• Integrated 100 watt power supply supports worldwide voltages from 100 to 240 volts AC for versatile deployment
• Drive hibernation reduces power consumption when disks are idle, helping to save energy
• Compact 12 inch depth fits both standard and wall-mount racks, optimizing space in your server environment
• Quiet operation at 25.1 dBA minimizes noise impact in office or lab settings
• Includes all necessary accessories such as AC power cord, eSATA cable, and mounting hardware for quick installation

Key specs

• Drive bays: 4 SATA (3.5 inch and 2.5 inch compatible)
• Connection interface: Single eSATA cable
• Power supply: Integrated 100 watt, 100-240V AC input
• Dimensions (depth): 12 inches
• Noise level: 25.1 dBA
• Drive hibernation: Supported

Connectivity and compatibility

The RX418 connects to your Synology RackStation via a single eSATA cable, which is included in the package. This connection integrates the expansion unit directly into your existing NAS system, making the additional storage appear instantly within DiskStation Manager. It is compatible with a range of Synology RackStation models that support expansion units, allowing you to scale your storage as your data needs grow.

Installation and setup

Installation is straightforward with the included accessory pack, AC power cord, and eSATA cable. The unit’s compact 12 inch depth allows it to fit easily into standard or wall-mounted racks, making it suitable for various server room configurations. Once connected, the expansion unit is managed through Synology’s DiskStation Manager, so you can configure volumes, RAID arrays, and snapshots using the same interface you already know, simplifying storage management.

Ideal uses and environments

This expansion unit is well suited for offices that need to grow shared storage without replacing existing NAS hardware, creative studios archiving large media files, and home labs managing surveillance footage. Its quiet operation and compact size make it a good fit for small server rooms or workspaces where noise and space are considerations. The hot-swappable bays and energy-saving features support environments that require continuous uptime and efficient power use.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

Learn more

Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

Learn more

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

Learn more