Unity Connection Cluster Upgrades

Seeing as this tripped me up the last time I did it, here's the correct order of actions for upgrading a Unity Connection HA cluster:

1. Confirm database replication is OK & cluster is functioning
2. Upgrade the publisher but don't switch versions
3. Upgrade the subscriber but don't switch versions
4. Switch versions on the publisher
5. Switch versions on the subscriber
6. Confirm database replication is OK & cluster is functioning
7. Install locales if required

UCCX Demo Licence

If you're building a lab, UCCX won't let you proceed through the initial set up without a valid licence file. Fortunately Cisco allow you to use a 30 day demo licence for any Standard, Enhanced or Premium, these are located in the DemoLicense folder on the install DVD. However if you don't have an install DVD or ISO to hand there is another way - you can download a UCCX update patch, open it with a tool like 7-Zip & extract the relevant demo licence file from it. Just remember that the licences are tied to the major UCCX version, so a UCCX 8.x install requires a UCCX 8.x licence file.