vSphere Virtual Center Linked Mode Prerequisites:
Well, yes this article has two headers or titles. Guess what they are almost identical.
I have seen “Error 28039. Setup cannot join vCenter Server to the linked mode group” all over the net & without any one posting resolution for it. hmmmm, how did I find out about this error and what made me looking for resolutions, well I had faced this same ugly error in my own lab. The resolution for it was nothing more than following the pre-requisite to vSphere Virtual Center Linked Mode which most people ignore. Below is the pre-requisite that you must follow for a successful installation of vCenter Linked mode & I will highligh the mostly missed one.
All the requirements for standalone vCenter Server systems apply to Linked Mode systems. In addition, to the following requirements:
The following requirements apply to each vCenter Server system that is a member of a Linked Mode group:
- DNS must be operational for Linked Mode replication to work.
- The vCenter Server instances in a Linked Mode group can be in different domains if the domains have a two-way trust relationship. Each domain must trust the other domains on which vCenter Server instances are installed.