Re: Wasted energy
Depends on the type of fail over event you are stating, we do once a year for DC core services being failed over and tested (Always my job :( and always a weekend, but at least its only once a year), someone else has the joy of going to the DR office and having machines built. We do have a last resort rush to PC world/Sainsbury's/Tesco and say give us every computer you have in stock, but obviously the bean counters don't like that one being tested.