Since vSphere 5.5 was released in September, I’ve seen a lot of blog articles related to the upgrade process. Most of these articles deal with the implementation details of some specific step – upgrading the vCSA, migrating from an older version of vCSA, fixing SSO, etc. However, it seems like one of the most common questions in the freenode #vmware channel is still, “In what order do I upgrade my vCenter without breaking things?” Let’s answer that question at a high level, without getting into the implementation details.
This info is based on VMworld 2013 sessions VSVC5690 (YouTube) and VSVC4945 (requires VMworld login) taught by Justin King, Josh Gray, and Kyle Gleed, be sure to watch the presentations for additional details.
rnelson0 