I got some thermal alerts from a 2104XP IOM last week. I investigated and saw no thermal issues in our datacenter, nothing was blocking airflow, and not other components were experiencing any type of thermal issue. So I opened a case with Cisco TAC. The looked through some tech support logs I sent them and indicated that the IOM's need to be replaced. I asked if this was a disruptive process and they indicated - in theory it is not. That answer didn't make me feel all that confident in replacing them. Has anybody replaced both IO modules in a chassis before. It is my understanding to just unplug the cables and pull out the IOM, insert the IOM, monitor it's progress in discovery and firmware update / downgrade, and once it's backup to proceed with the next one. Is there anyway of validating that an IOM is appropriately functioning? Or are there any specific steps I'm missing.
It's impossible for me to take an outage to do this change. The chassis hosts several hundred production virtual machines.