I have a ML310e Gen8 v2 server with the redundant backplane and 2 x 460w power supplies installed (part no 643931-001).
I have noticed that redundancy upon unplugging the cord or loss of AC supply works as expected, but I notice that if I disconnect and remove a power supply by pressing the tab and removing it from the server, upon re-inserting it and re-connecting the AC, the green LED stays off.
After a while, iLO reports the system health as "OK" and both power supplies "Redundant", but the LED on the PSU remains dark. In reality, the redundancy is not there and removing the other PSU causes the server to fail.
I would have expected the re-inserted PSU to power up with a green LED and redundancy to begin functioning as before. Additionally, if I then disconnect the AC from the re-inserted power supply, iLO still reports system health as OK! It seems it gets 'confused' when the PSU is hot-plugged.
I note that the manual requests you power down the server before inserting a power supply, but this seems to conflict with the "hot swap" capability. Do these servers only provide redundancy for power loss, and are not hot swap, or do I have a problem?
BIOS is P78 04/04/2019, iLO firmware is 2.73 Feb 11 2020, and the Power Management Controller Firmware is version 3.1
Thanks.