In this modern environment of "doing more with less", some of these rules have become suggestions. The phrase "doing more with less" sounds comforting; however, most people who have actually done the work know that they are truly doing less in order to meet a shortened time schedule. Just saying a catchy cheer does not make it reality. The fact is that shorter project schedules and smaller teams result in some work being skipped because a manager said "make it happen" on time and within budget. I know that many companies are no longer doing rule #5 because of cost and human resources. While virtualization does help reduce the cost, it is not nearly as cut and paste as some have claimed.
5.Run three parallel systems online, on, off and a cold reserve.
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