Hi I think I have found the answer but thought I better check.
We have a vSphere 4.1 environment with a cluster of 4 esxi 4.1 servers with a VCenter Server 4.1
We are just starting the build of a new independent Cluster and would like use esxi 5 but still keep our current Cluster on esxi 4.1 for now.
The area I'm a bit concerned about is the VCenter Server, from reading I would have to upgrade our current VCS 4.1 to 5.0 if we want to manage both 4.1 and 5.0 esxi server as esxi 5.0 is not supported in VCenter 4.1, is this correct?
If we don't have enough time to upgrade the current VCenter server can we build another Vcenter server home all the ESX5i servers on it then migrate the old servers easily ?
When working with a cluster is the best approach to upgrade the Vcenter Server first and then hosts?
To upgrade VCenter Server 4.1 to version 5 the OS needs to be a 64bit OS, you can't upgrade if you have a 32bit OS.
Lots of little questions but I want to be sure what I have read is correct.
Regard,
John