Please let me know the procedure for replacing the psu of the chassis.

[HyunJun Lee]

The third psu out of the four psu does not power up in the chassis operating in psu grid mode. If I replace it, do I need to unplug the power cord 3 from the pdu in the back and replace it? Do we need to change the psu policy?

Please let me know the procedure for replacing the psu of the chassis.

[Kirk J]

Not all the PSUs may be active, depending on your actual wattage pull.

Are you getting PSU failure messages?

Kirk...

[HyunJun Lee]

Thank you for your answer.

First of all, we opened the tac and replaced psu number 3 through RAM.

Hot-swappable, so it was possible to replace it immediately during the service without any action.

The warning message was both psu offline and two power-redundancy errors.

I wonder if 1,2,4 PSU 7500W is available because the power policy is in grid mode or if only 1or2, 4 psu is available for 5000W.