Propoganda
If you are being throttled due to temperature then you should know that there is a cooling problem, usually the flow of heat in air or fluid isn't working, which is part of the usual monitoring. I cannot see why the broken caster is anything special. It could have fallen over due to a centre of mass problem too.
Why don't they install hall effect devices and get the actual level of the rack too? Or about about's they practice some OH&S and physically secure the top of the rack to something that is sturdee and/or structural. I mean your average plumber knows that the hot water heater can fall over due to its center of mass, so all I take from this is that they (google) are just reinventing what has been known for centuries.
Biting the hand that feeds IT
