In my former service company, the story of the server room which has become much much more important and reliable with massive investment like a diesel generator, but the teams haven’t grown enough in maturity. One day they have a problem with a server. A system admin is granted permission to go to the bay, since remote desktop didn’t work. They discuss the problem in front of the bay. One leans on another bay that was just between two locations. Wheels weren’t locked. It just flew across the room.

It was ok, just the power cord and a fee RJ45 torn. No serious damage besides downtime.