In Darl's own words:

"I remember that the models were showing -- we would look at IDC numbers, and there were X millions of servers and growing at a certain rate. And I remember specifically 4 million servers going to 6 million servers over some time frame. I'd have to go back and refresh what the time frames were, but I remember bracketing if you've got 4 million servers against our list price of $700, you multipy that out, you get $2.8 billion. If you go up to the full list -- or the list price against the 6 million then you are talking about $4.2 billion. So it was always -- it's a ridiculously big number. So okay. I guess we could get finite on whether the number is $5 billion or $1 billion or $6 billion. The point is it was a lot of money for the company, and the size of company that we were"