I just did an upgrade for one of my customers to version 7.13 last week.
>>> Is it a good idea to replace the security server with a UAG?
Yes, Security Servers are no longer supported with Horizon 8 (2006)
https://docs.vmware.com/en/VMware-Horizon/2006/horizon-upgrades/GUID-37449047-4E44-426C-BB9D-D6F5503...
>>> If so, are there any suggestions about do's and Don'ts?
Well, how to do this exactly depends on your needs, e.g. size of the environment, 2-factor authentication, ...
UAG is basically not a rocket science, and pretty easy to deploy.
>>> I am looking to take my environment up to at least 7.12 for now. Haven't had time to investigate version 8 yet so not sure i want to go there.
If you are still using linked clones, stay on version 7, and migrate to Instant clones. VMware made instant clones available in version 7.13 regardless of the edition, i.e. it's been added to the Standard and Advanced edition.
André
