Re: PE servers runing both 110v and 220v power at the same time.

Hello njcans

Mixing input voltages is not supported or recommended. The lower voltage PSU should trigger an error, but a higher voltage PSU may error if it is changed while the server is on and running off of a lower voltage PSU.

Dell Internal Documentation

When matching PSU wattage are plugged into mixed line voltage (one PSU in 208V and other in 120V), the low line PSU will trigger an error.

Neither of the conditions you are inquiring about should work. Both should result in an error.

Thanks