Hello, I hope this is the right mail list to ask.
I've got three Dell C6220 chassis with 4 sleds in each. I'm running Debian 8 + Proxmox VE on them. Each chassis has 2 power supplies and the power supplies are identical in each chassis (so there's no PSU mismatch). One day one of the chassis powered down all 4 sleds and I couldn't even power it up using IPMI. I could reach the IPMI but it didn't do anything with the power control (pressed power on and nothing happened). After physically re-seating the two power supplies the 4 sleds booted up. But now the IPMI doesn't detect PSU2. It only detects PSU1. The PSU fail-over still works: if I unplug the power cord from either PSU the other one keeps working and the server won't stop. Replacing the power supplies with spares didn't change anything: PSU2 is not detected. When I remove PSU1 the IPMI says no PSU is detected (and also says PSU redundancy is OK) but the server (all sleds) keeps running. I checked the other two C6220 chassis and they detected both PSU1 and PSU2. Any idea what went wrong? Perhaps a sensor on the chassis logic board? Thanks!
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