AC unitOur IT team at Westminster College in Fulton, Missouri recently revitalized the school's neglected data center. Here are the "after" photos of the project. (Unfortunately, I didn't take any "before" photos.)
For whatever reason, someone thought that this AC unit would be perfectly adequate for the server room. Now that we've significantly reduced the heat load by eliminating a bunch of servers (our virtualization project), it does a better job of keeping up, but it is likely to need serious attention in the not-too-distant future. Note that one of the tubes is not yet connected to the duct (we went with uninsulated flexible duct due to space constraints in the ceiling) since the area of the room that will be served by this tube is not yet ready.
For more details, read Scott Lowe's post about this server room makeover.