The recent failure of scs-c1-eqiad has demonstrated that we should have documented the serial connections in advance of the serial console's failure. Since we didn't document this, @Cmjohnson is going to have to trace out each serial connection, and that particular scs is completely full (so 48 ports of tracing.) Each cable (should) have a cable ID #, but it still means he has to check each device and write down the label number attached to it, and then find it at the scs end and plug it back into the new switch.
I suppose a wikitech page is the bare minimum, detailing each scs console, its ports, labels, and the cable id # that has been added to each of the serial connections.
Since we use opengear, we can also backup the configuration of each scs and store it for restoration on replacement opengear equipment.
This way when a scs console dies, we already know what each cable (with its #) is for replacements.