I am getting ready to upgrade two ACS servers and I have a couple of questions. Both servers are running 4.0.27 and I am going to take them to the latest revision. I have all the files and the proper patches that are needed based on all I read in the release notes. My questions are:
1. As long as I leave one ACS running, is it a problem to down the other for upgrade?
2. Will all current server certificates that are installed stay or will they need to be re-applied after the upgrade?
3. Current certificate is issued by an IAS server and is going to expire soon. What is the procedure for me to apply the new certificate?
Go ahead and take a look at this: