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Vcenter 4.0 to 4.1 and P to V

Preparing to upgrade Vcenter from 4.0 to 4.1 but the hardware VCenter is on is out of warranty and the OS is 32 bit.

So I'm wondering what the best method would be to get Vcenter upgraded and onto a VM. We have 5 hosts (3 of which we will be switching out with new hardware as well) so it isnt a terribly complex environment but we do have a Lab Manager environment running off the same Vcenter server.

Any suggestions on a good path?

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2 Replies


I did several upgrade to vSphere 4.1 with different scenarios (but without Lab Manager). I would suggest do it in that order

  1. Provision new VM Win2k8R x64
  2. Follow below instruction
  3. depends on your current config, you will choose proper scenario, started from page 33,

Basically migration it's not very difficult, VMware prepared very nice upgrade script (page 39 from above pdf) which is collecting data from old vCetner  server and importing to new vCenter server.

I would be able to give you more precise advice but you didn't provide enough information.

If you have any question, just post them I will try to replay ASAP


VCDX77 My blog - http://vmwaremine.com
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VMware Employee
VMware Employee


Read follow kb with procedure to help in Upgrade.

You will need migrte do vcenter x64.



Other tip, if you will upgrade your host, put ESX(i) to have facility in upgrade future, vSphere 5, only will have ESX(i) version, ESX will be out of market.

you need do a fresh installation (new installation) to upgrade 4.0 to ESX(i) 4.1

read too http://communities.vmware.com/thread/276514?tstart=0 and http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=102214...

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