The Synology RX415 is a dedicated expansion unit designed to increase the storage capacity of compatible Synology 1U RackStation servers. This silver-colored hardware provides four additional HDD slots, allowing you to scale your data environment without replacing your existing server. To ensure continuous operation, the unit supports hot-swappable drives, meaning you can replace or add disks without powering down your system. Its physical design features a short-depth chassis, which makes it versatile enough for installation in 2-post racks or wall-mount setups where space is limited. Measuring 44 x 430.5 x 290 mm and weighing 4.23 kg, the unit connects via a single eSATA port to integrate seamlessly with your main server. It operates reliably in environments with temperatures between 5°C and 35°C and humidity levels from 5% to 95% RH, making it a practical choice for IT professionals managing growing data archives in compact server rooms.