In our data center we are going to be moving all of our dual power supplied IBM servers (auto sensing 110/220) from an outdated 110 system of dumb power strips to an updated in rack 0u 220 monitored PDUs.
In order to do this we will either need to power down each server one by one to move both power supplies from the 110 plugs to the 220 plugs or move each psu at a time which means having half in 110 and half in 220 for a few seconds while we move the wires. Has anyone ever done this? I have read on a couple data center blogs that it's not a problem, found a support thread on HP about their servers saying it's not a problem, but still want to ask if anyone else has done it. Being able to use different voltages will reduce the time needed for the conversion from a year to instead several months as down time for every single system will not be required.
Again, these servers have dual, some quad, independent hot swappable power supplies that auto sense the incoming voltage and adapt accordingly.