Does upgrading to vCenter 4 make any changes to my esx 3.5 hosts? We run our vCenter 2.5 in a VM and I want to take a copy of the vm before the upgrade so that we can roll back if things don't go as planned. So will my esx 3.5 hosts care if they see a v4 vCenter and then we roll back to a v2.5 one?
Thanks for the speedy response, my real concern is that will the esx host have it's configuration changed once it connects to a v4 vCenter. I'm pretty sure they don't but I just want to be 100% before I run the upgrade in production.
We're upgrading vCenter prior to setting up our DR site so we can't get familiar with it. We intend to upgrade the hosts but we're currently waiting for the new version of Veeam to be released to help mitigate the service console throttling issue with ESX 4.
So as long as I don't roll out the updated agent until we upgrade the esx hosts I should be fine to roll vCenter back?
I know I'm being overly cautious but we're relativley new to virtualisation (in production anyway) so I'd like to be able to roll back to vCenter 2.5 if things don't go as planned, as very unlikely as it is.
Should be no problem, but I think that you will have no problem with upgrading to vcenter4.
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