3003That’s what datacenters are for, preventing such events 🙂 Unfortunately not always as the supplier indicated changes had to be made to the powerdistribution in various racks which takes downtime. The indicated time for the changes was well kept, despite we shutted (preventative) our systems half an hour early. The first system announced back exactly at the end of the changewindow, unfortunatly others came back later due to unforeseen consequences. Sleep well!