We do this yearly. The first time we did it was painful. It took all day, probably around 40 people involved total. We found all sorts of problems, and we actu

We do this yearly. The first time we did it was painful. It took all day, probably around 40 people involved total. We found all sorts of problems, and we actually only failed over the production site, nothing else. We'll be doing it for I think the fifth time in a few months. Mostly automated now, last year was pretty smooth, aside from a couple bad assumptions that crept back in to some code. It is like anything else, repetition makes perfect.