I had an interesting hardware failure yesterday that I’ve never seen before, and there’s no way I would have been able to debug it if I hadn’t had an excessive amount of power monitoring in place. In the end, it turned out to be a partial PSU failure on a Juniper 715W PSU in a Juniper EX4300-48MP switch. The fun part is that the switch itself kept working and thought everything was fine. This was kind of a fun debugging story, so I figured I’d share it.
