Upgraded 7.11 to 7.12 with no issues. This is worth blogging about because it went so smoothly. No issues at all 🙂
Upgraded the first delivery controller.
Opened Studio, then it prompted to upgrade the site.
During this process it disconnected both of my delivery controllers from the database and made all the applications unavailable.
This process took roughly two min. I can’t complain about that, two min of down time to upgrade citrix to the latest version.
I feel very comfortable about the next upgrade, backup the database, take snap shots of the delivery controller and upgrade.