heavenlywild: My question for all IT folks - if one of those cables failed in the server room, how in the world would you know which one?
Documentation and monitoring.
Normally both ends of all cables have the same label on them. Look at about 1:34 through the video before it pans to the right. The BNC connectors have a black label on the cable about 3CM from the connector with a number on them
If your patch lead stopped working wouldn't you notice the light went out on the router.
DC's the same, just on a larger scale.