The Synology DX1222 is a 12-bay expansion unit that adds serious storage capacity to compatible Synology NAS systems. If you’re running out of space on your existing DiskStation and need room for backups, media libraries, or business data, this expansion chassis lets you scale up without replacing your entire setup. It connects directly to your main unit and integrates seamlessly through DSM, Synology’s operating system.
Setup is straightforward—connect the expansion unit to your DiskStation, and DSM recognizes the additional bays automatically. You can configure the new drives using the same storage management tools you’re already familiar with, whether you’re setting up RAID arrays, storage pools, or volumes. The DX1222 supports both 3.5-inch and 2.5-inch drives, giving you flexibility to mix HDDs for bulk storage or SSDs for faster access. The unit comes diskless, so you choose the drives that fit your capacity and performance needs.
Who Is This For?
This expansion unit makes sense if you already own a compatible Synology NAS and need more storage without the complexity of adding another standalone system. It’s ideal for small businesses managing growing data sets, creative professionals storing large video or photo libraries, or home users running Plex servers and backup solutions. The 5-year warranty provides long-term peace of mind, which matters when you’re storing important data. If you’re starting from scratch without an existing Synology system, you’ll need to purchase a compatible DiskStation first.
Bottom Line
The DX1222 delivers clean, reliable storage expansion for Synology users who’ve outgrown their current capacity. It’s not the cheapest expansion option on the market, but the seamless DSM integration and solid build quality justify the investment if you’re already in the Synology ecosystem. Simple to set up, backed by a strong warranty, and designed to work exactly as expected.
