If either of the two power supply modules fails, the other module takes the full load and allows the system to continue operation without interruption. The power diagnostic LED illuminates until the failed unit is replaced.
You do not need to shut down the system to replace a power supply unit. The backup power supply module keeps the system operating while you replace the failed hot-swappable power supply. Replace a failed power supply with the same model.
To replace a power supply:
1. Unplug the AC power cord from the failed power supply module.
2. Depress the locking tab on the power supply module and use the rounded handle to pull it straight out.
3. Push the new power supply unit into the power bay until you hear a click.
4. Secure the locking tab on the unit.
5. Plug the AC power cord back into the unit.