Evan Dodd addresses the /3GB switch confusion and common misconceptions in an informative and to-the-point article on his web log, pointing to technical commentary by a colleague, in the context of Exchange server.

Exchange Server is a complicated product, but things as simple (yeah, I said it) as the /3GB switch don't need to be such a mystery. Admittedly, most exchange admins won't actually care *what *the switch does. But for those that do want to know, they can easily find out, and even participate in a lively discussion. Or get a link summary of the whole discussion here.

This is a good example of why blogging by the people who are in the trenches is such a great idea. By the way - Another good Exchange commentary resource is KC Lemson's blog.