I am planning an upgrade of a couple different clusters in our environment. We are currently on OT 9.3p10. I am planning on upgrading to 9.7p16. I have my AIQ upgrade advisor plans, and I have been working through a check list of items like making sure firmware versions are up to date, to make the upgrade as smooth as possible. I was wondering if anyone has had any suggestions to make this as painless as possible? Or is anyone has had any issues with the upgrade that I might need to consider before pulling the trigger?
I have done a few upgrades in the past, but this will be my first dual upgrade (i.e., 9.3 to 9.5 to 9.7) and my first 4 node upgrade.