Synology SA3400 Hardware Installation Guide - Page 18

Expansion Unit Deployment and Topology SA3400 supports RX1217sas (12-bay) and RX2417sas (24-bay) expansion units, providing seamless storage expansion whenever needed. This section will guide you through how to connect the expansion units to your Synology NAS. To connect RX1217sas/RX2417sas with SA3400: 1 Connect one end of the expansion cable to the SAS OUT port of your SA3400 and the other to the SAS IN port of RX1217sas/RX2417sas. Make sure the release band (in blue) of the cable faces rightward when plugging into the SA3400, and that of the cable faces upward when plugging into RX1217sas/RX2417sas; otherwise, the SA3400 and expansion unit will not be correctly connected. 2 Connect one end of the power cord(s) to the power port of RX1217sas/RX2417sas, and the other to the power outlet(s). RX1217sas/RX2417sas will automatically power on once the power cords are correctly connected. Note: Your RX1217sas/RX2417sas comes equipped with a redundant power supply system, allowing two power cords to be connected. The system may be powered on with only one power cord, but we recommend using two power cords to avoid unexpected power failures. Important: Do not remove the expansion cable while the host device is still powered on. Doing so may result in data loss. 18 Chapter 2: Hardware Setup