jfbrouillette
1 Nickel

PSU - wattage mismatch

Hi,

We have 2xR910 (4 PSU each) and 2 different power sources (2 APC powerbar)

I saw an error message saying : Power redundancy is lost. So I go check my logs and get this ->

Fri Nov 20 2015 02:33:24 Power supply redundancy is lost.
Critical 0.000290Fri Nov 20 2015 02:33:18 A power supply wattage mismatch is detected. Power Supply 4 is rated for 1100 watts.
Critical 0.000289Fri Nov 20 2015 02:33:18 A power supply wattage mismatch is detected. Power Supply 3 is rated for 1100 watts.
Critical 0.000288Fri Nov 20 2015 02:33:18 A power supply wattage mismatch is detected. Power Supply 2 is rated for 1100 watts.
Critical 0.000287Fri Nov 20 2015 02:33:17 A power supply wattage mismatch is detected. Power Supply 1 is rated for 2264 watts.

Our other R910 is fine and I never saw any error like this but it hapens quite frequently on this one. Also, we can see that PSU1 is the one getting 2264 watts but sometimes its other PSU that get irregular value.

Any idea how I can detect what is the problem or which PSU is causing this?

We did some electrical redondancy test last week (power was cut from each of our sources) and server was ok, it didnt power off.. (2 PSU worked as expected..)

Thanks for your help. 

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jfbrouillette
1 Nickel

RE: PSU - wattage mismatch

up?

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RE: PSU - wattage mismatch

Hello.

The error message you are getting is associated with using power supplies of different input type and power rating. As seen from your logs, you are using 3 1100 Watts power supplies together with a 2264 Watts power supply on the same server. Consider installing matched power supplies (same input type and wattage); possibly replacing the 2264 W supply with 1100 W then clear and review the event logs

Robert Alakara

Dell EMC | Enterprise Services

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