Hi Heinzel,
There is no restriction between build versions, but there is some restrictions between vSphere versions. Check this:
"vCenter Server 4.0, vCenter Server 4.0 Update 1, and vCenter Server 4.1 can be joined in the same Linked Mode group, but both vSphere Client 4.0 and vSphere 4.1 are required to log in to the Linked Mode group."
"vCenter Server does not support Linked Mode groups that contain both version 5.x and pre-5.0 versions of vCenter Server. Similarly, vCenter Server does not support Linked Mode groups that contain both version 5.1.x and 5.0.x versions of vCenter Server. vCenter Server 5.0.x can be joined in a Linked Mode group only with other instances of vCenter Server 5.0.x. vCenter Server 5.1.x can be joined in a Linked Mode group only with other instances of vCenter Server 5.1.x. After all vCenter Servers in the group are upgraded to version 5.0.x or all vCenter Servers in the group are upgraded to version 5.1.x, you can rejoin them."
You don't need to be worry for Database or Roles, this feature only add the possibility to see all vCenters from a single vSphere Client.
I hope this be useful for you
Regards |