i work for a medical company...these are servers that are going in a demo for a trade show, hooking them up to 54 workstations. there's 4 servers (1 DNS, 2 RAID-5, 1 test) in the server rack on the right, 3 servers (2 servers, 1 cluster server) in the server rack on the left.
basically, we set up the hardware in a warehouse, pre-stage it, make sure it all works together, get all the workstations added to the domain, networked, etc., etc., and in a few weeks when the trade show rolls around, 3 days prior to the show begins (
http://www.rsna.org/), we move everything from this warehouse to the conference center downtown, set it up again there, and when the shows over, pack it all up and send it home.
and they serve medical images for PACS systems (digitally stored images of x-rays) and make them readily available to any hospital/company that's on the network, as well as any doctor from any place (hospital OR home). pretty neat stuff.