I continually get questions about why systems fail and questions about the cause of certain system problems. When you are called to a site where the system is struggling, your first step in finding a solution is to identify the cause of the problem. As you all know, this is sometimes a lot harder than it appears. I will spend a little time going through ways to troubleshoot systems of different types, going over what to look for, and — when possible — giving potential solutions. I did this a couple years ago as some of you may recall, and
