b. Tighten the screws.
9. Connect all cables and external attachments.
10. Connect the power cord to the electrical outlet.
11. Power on the NAS.
Hot-Swapping Redundant Power Supply Units
1. Power off the storage controller.
2. Disconnect the power cord from the electrical outlet and the power supply unit (PSU) that you are
replacing.
Warning
The NAS may have one or more power supply unit (PSU) cords. To avoid serious injuries, a
trained service technician must disconnect all PSU cords before installing or replacing system
components.
TDS-h2489FU User Guide
Installation and Configuration
30