1. Review documentation/ release notes. 2. List/ Review the steps in the upgrade. 3. Get the other parties involved to set aside time. 4. Then I would look at the media, and take any backups if needed. 5. I would set up a time which i would communicate to the users asking them to stay out of the system. 6. Complete the upgrade 7. Communicate with the users that it is ok to log back in to the system.