good to hear that you think you have things solved, but in the future you might consider some scheduled downtime in advance, and then go ahead and do scheduled upgrades to handle this stuff, or better yet have a redundant system that allows you to do hot swap upgrades and increase your network. just some ideas as this is what I would be doing.
For sure this system was redundant...The issue with the system was not foreseen. We have identified it as an issue now and will have it fixed ASAP to prevent that choke point. I appreciate the feedback