Chapter 6: Advanced Chassis Setup 6-5 Power Supply The AS4021M-T2R+/4021M-82R+ has a redundant 800 watt power supply con- sisting of two power modules. Each power supply module has an auto-switching capability, which enables it to automatically sense and operate at a 100V - 240V input voltage. Power Supply Failure If either of the two power supply modules fail, the other module will take the full load and allow the system to continue operation without interruption. The PWR Fail LED will illuminate and remain on until the failed unit has been replaced. Re- placement units can be ordered directly from Supermicro (see contact information in the Preface).
The hot-swap capability of the power supply modules allows you to replace the failed module without powering down the system. Removing/Replacing the Power Supply You do not need to shut down the system to replace a power supply unit. The redundant feature will keep the system up and running while you replace the failed hot-swap unit. Replace with the same model - (see Appendix C). 1. Removing the power supply First unplug the power cord from the failed power supply unit. Then depress the locking tab on the power supply unit and pull the unit straight out by the handle. 2.
Installing a new power supply Replace the failed module with another power supply module (must be the exact same - refer to Appendix C for part number). Simply push the new power supply unit into the power bay until you hear a click. Finish by plugging the AC power cord back into the unit. 6-9