Synology RX1222sas 12-Bay Expansion Enclosure

The Synology RX1222SAS is a rackmount expansion enclosure designed to give your Synology SA3600 or SA3400 the extra space it needs without forcing any downtime. With twelve bays that accept both 3.5-inch and 2.5-inch SAS or SATA drives, you can mix high-capacity hard disks with high-speed solid-state media, or keep things simple with a uniform drive set. Connection is straightforward through the two included Mini-SAS HD cables, so installation feels more like plugging in a new component than performing a major upgrade.

This enclosure lives comfortably in a 2U rack slot and brings along dual 500 W power supplies. If one supply ever fails, the second takes over automatically, which keeps data services online and lets you schedule maintenance on your terms. Drives, cooling fans, and power supplies all slide out quickly, making replacements or upgrades as routine as swapping a tape cartridge used to be.

Because it can be stacked with up to seven expansion units, the RX1222SAS fits a growing business that does not want to rethink its entire infrastructure every time the archive, video library, or virtual machine pool outgrows current storage. Everything shows up in Synology DSM Storage Manager, so your IT team can create new volumes, expand existing ones, or set up redundancy using tools they already know.

At 54.5 dBA, the enclosure stays quiet enough for a typical equipment room, and the 29.8-pound chassis is manageable for a two-person rack install. Whether you are safeguarding customer backups, hosting a media workflow, or adding capacity to a virtualization cluster, this expansion unit helps you scale smoothly while keeping the management experience unified and familiar.

• Twelve drive bays accept 2.5-inch and 3.5-inch SAS or SATA media
• Seamless capacity expansion for Synology SA3600 and SA3400 NAS
• Hot-swappable drives, fans, and power supplies support uninterrupted service
• Dual 500 W power units provide automatic failover protection
• Ships with two Mini-SAS HD cables and two AC power cords for quick setup
• Occupies a 2U rackmount slot and weighs 29.8 lb
• Operates at 54.5 dBA to suit most server rooms
• Supports stacking of up to seven expansion units for large-scale growth
• Fully managed through Synology DSM Storage Manager
• Includes a five-year hardware warranty for added peace of mind