We have a rack in a datacenter with about 12 rack mounted servers. Right now, all the servers are running on 110v, though they all have 110v-220v switches on their power supplies. The data center is offering us new power at a cheaper rate, but it is 208v (not sure why 208 instead of 220) and I am considering making the switch.
Question: is there a risk in turning off each server, unplugging the old power, switching the power supplies to 220v, plugging in the new power, turning on the server using the new "208v" circuit?
Could the power supply fail? Could it fail to switch back to 110v? Could the procedure actually damage the mother board?
I've left out all the details as to why the data center wants to make the change because they aren't important to the question I'm asking here which is: is it dangerous to switch from 110v to 220v (208v) using the power switch on the power supply and plugging in to the new power source?
Thank you in advance for any opinions anyone might have on this subject.