Expand your FlashStation¹ with Expansion Unit FX2421 for 24 additional 2.5” drive bays whenever needed. Without additional software configuration, FX2421 is immediately ready for use when connected to FlashStation. FX2421 expansion units can also be used as a dedicated and rapidly accessible local backup destination. The FX2421 expansion units for FlashStation1 make it easy to upgrade your all-flash storage space.
SSD. Each 2U rackmount unit lets you add 24 additional 2.5” drive bays on the fly using an expansion cable. Synology FX2421 is the first 24 bay expansion unit to support SAT5200 SATA SSD, allowing you to create a highly reliable and integrated storage setup, and receive long-term updates and support.

• Seamless Storage Expansion
24 additional drive bays available for online volume
expansion on the fly for your Synology FlashStation1
• Best Fit With Enterprise-Grade Synology SSD
Use with SAT5200 SATA SSD for high
performance, endurance, and verified compatibility
• High-Reliability Design
Modularized components including redundant power
supplies and system fans ensure maximum uptime
• Easy Hardware Setup
Plug-and-play design and fast rack fixing lock support
make upgrading storage space easy
• Extended After-Sales Support

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RXD1219sas is a 2U expansion unit, providing an easy storage space upgrade solution for your Synology servers1.

It can add up to 12 additional 2.5″ / 3.5″ SAS drive bays on the fly when connected directly with a mini-SAS HD cable.

Volume Expansion and Backup
Simply connect Expansion Unit RXD1219sas to the corresponding  server1 and it is ready to use. No additional software installation is required to upgrade your storage space seamlessly.
The RXD1219sas is a flexible solution supporting on-the-fly volume expansion or serving as a local backup destination. When your server runs low on storage space, RXD1219sas provides easy capacity expansion by adding 12 additional 3.5″ / 2.5″ SAS drives to the system.

Plug-and-play design for a seamless storage space upgrade
• 12 additional SAS interface drive bays available for online
volume expansion on the fly
• Mini-SAS HD connectivity enabling high performance
data transmission
• Redundant power supplies that maximize service uptime
• Fast rack fixing lock support with Synology Rail Kit
RKS1317
• Backed by Synology’s 5-year limited warranty2

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General Features

Storage Capacity Expansion

When the storage capacity on a 1 RU RackStation reaches its limit, the RX418 expansion unit provides easy capacity expansion by adding four 3.5″/2.5″ SATA drives to the system. The RX418 can also be used as a dedicated local backup destination of a 1 RU RackStation for comprehensive data protection.

Plug-and-Play Design

Simply connect the RX418 to a corresponding RackStation and it is ready to use. Drives in the connected RX418 operate as though they were internal to the connected NAS and can be managed directly by DiskStation Manager (DSM), with no additional software installation required.

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Synology DX1215 12-Bay Expansion Unit

The DX1215 12-Bay Expansion Unit from Synology delivers volume expansion and data backup for the following selected Synology DiskStation servers: DS3615xs, DS3612xs, DS3611xs, DS2015xs, and DS2413+. There is also a DSM version requirement of 5.1-5004 or later. The DX1215 provides an additional 12 drive bays that support SATA III 6 Gb/s and SATA II 3 Gb/s 3.5″ hard drives, as well as 2.5″ hard drives and solid-state drives.

When used with Synology DiskStation Manager (DSM), RAID management is possible and a RAID volume on your Synology DiskStation can be expanded directly without having to reformat any existing drives. This helps to ensure that your DiskStation continues to operate while its capacity is being expanded.

The DX1215 can also act as a dedicated local backup solution for a Synology DiskStation. When created as a separate volume, the DX1215 helps to provide a backup solution for local drives in case of a system failure. In addition to RAID management and local backups, online volume expansion is also supported.

To connect to the DiskStation, the DX1215 uses a secure and specially designed expansion cable that connects to its Infiniband port. This helps to ensure not only a simple connection but maximum data throughput. The 6 Gb/s connection speed allows the drives in the connected DX1215 to operate as the internal ones of the DiskStation.

The DX1215 also has a hibernation mode that can be manually configured to automatically start when the system has been inactive for a period of time. This not only helps to save energy but also helps to extend the lifespan of the internal drives. The DX1215 will also intelligently power off with the attached DiskStation, helping the system to run smartly and efficiently with minimal user intervention.

The DX1215 has an integrated and fast detachable fan module with dual 120 x 120mm fans and screwless drive trays, allowing system components to be replaced quickly and without any tools. The DX1215 12-Bay Expansion Unit operates on 100 – 240 VAC on 50 to 60 Hz, single phase. Included with this unit are 52 x 2.5″ drive screws, 2 x drive tray keys, an AC power cord, and an Infiniband expansion cable.

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Volume Expansion & Backup

When drive capacity is running low on a Synology RackStation, the RX1217 offers an easy way to immediately expand storage by providing 12 additional drive slots. The RAID volume on the RackStation can be expanded directly without having to reformat the existing hard drives, ensuring service continuity during the expansion process. When created as a separate volume, the RX1217 also serves as an additional local backup destination for Synology RackStations.

Reliable Design

The RX1217 securely connects to RackStation servers with a high-bandwidth expansion cable, ensuring maximum data throughput and smooth operation – as if they are part of the internal drives of RackStation. A SATA 6 Gb/s interface ensures the installed drives provide fast data processing performance.

Easy to Manage

Hibernation mode can be manually configured to start automatically when the system has been inactive for a period of time. This not only saves energy but also extends the lifespan of your hard drives. The RX1217 will also smartly power on/off with the attached RackStation, so no user intervention is needed to keep this system running efficiently.

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24-bay 2.5″ SAS/SATA expansion
Easily add 24 additional drive bays to Synology FlashStation or RackStation. Supporting 2.5″ SAS/SATA drives, the RX2417sas is a flexible solution supporting on-the-fly volume expansion or serving as a local backup destination.

Maximum Reliability Design
Dual power supplies ensure continuous service uptime. Easily replace defective drives with hot-swappable drive trays. Experience fast and secure rack cabinet installation with the optional sliding rail kit RKS1317.

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