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Supermicro PSU yellow light on battery power?
(alien.top)
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this post was submitted on 24 Nov 2023
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I get that it happens with both. What I’m telling you to do is to put one on battery and completely kill the power to the other.
If the PSUs are alerting because they don’t like your budget UPS but they still work then fine, that’s annoying. If they’re shutting down because they REALLY don’t like it then the UPSs aren’t doing anything aside from making your setup less efficient and you don’t actually have any backup during a power loss.
Yeah it kills the server. The one on battery doesn't sustain anything. The UPS is not giving any backup power for black/brown outs for that particular server regardless now.
Is this really just PSU? Or it's tied into the MB somehow?
Assuming this isn’t user error, where you have your Server plugged into outlets that are only surge protected and not battery powered, you have it backwards. Your server, or more specifically the power supplies, power controller, and the BMC (if you have one), aren’t DRAWING any power from your UPS because they don’t consider it clean enough to use. The UPS doesn’t “give” anything.
Check to make sure you’re using ports that are powered under battery and if so your options are to get a new UPS that generates a pure sine wave, get a new server that doesn’t care, or just plug it straight into the wall and know that it will shut down during a power outage.