Date: 05/18/05 (Computer Geeks)    Keywords: no keywords

This just came up at work. Why are servers (and other rack mounted equipmnent) measured in U and why is 1U 1.75 inches?

Obviously there has to be some sort of standardised measure, but why 1.75 inches? Why not 2 inches or 5cm or 1 hand? And why are racks 19 inches wide? Why not 20inches?

Source: http://www.livejournal.com/community/computergeeks/688683.html