Vcenter server upgrade failed - Can I import into new server

Hi all,

I recently tried to upgrade my 4.1 vcenter server and it went slightly pear shaped. I have 3 ESX 4.1 servers being managed. We have now built a Vcenter using 5.1. Im thinking rather than trying to fix my existing 4.1 server could I just import the 3 esx server into the new 5.1 server for management?
MJB2011Asked:
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coolsport00Commented:
There's a 'link' on the right side (Summary tab, scroll down) to disassociate the Host from vCenter

DisassociateHost
~coolsport00
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, just add your new ESXi 5.1 servers to vCenter 5.1.
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MJB2011Author Commented:
Sorry I didnt explain too well. I still have 3 x 4.1 servers. I want to know whether I can import them into the new vCenter 5.1 server and then upgrade them to ESXi 5.1 after importing?
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coolsport00Commented:
You can add your 4.1 Hosts to a 5.1 vCenter; and, a good idea so you you can migrate VMs off Hosts to do upgrade of them. If you add SSL Certs to your Host, you may need to disconnect it from vCenter then re-connect it as vCenter will lose 'trust' with the 'default cert'.

Regards.
~coolsport00
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, you can use Update Manager to upgrade them to 5.1.

You may want to connect directly to your ESXi 4.1 servers with the vSphere Client, and disconnect them from vCenter 4.1 first! otherwise vCenter 5.1 will complain, they are still being managed by IP Address ..... etc

this will not affect any running VMs, the connection, disconnection to Vcenter Server.
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MJB2011Author Commented:
Thanks.

Makes me wonder why you would want to go through the process of upgrading Vcenter when you could just build from scratch easier enough
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coolsport00Commented:
Ha...exactly; just disconnect from ODBC (assuming using remote DB), then connect to new VM, then install vCenter and have it upgrade the DB. Done :)

~coolsport00
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
only if you want to keep the performance data!
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MJB2011Author Commented:
One more question: hanccocka

You said : "You may want to connect directly to your ESXi 4.1 servers with the vSphere Client, and disconnect them from vCenter 4.1 first!"

Where exactly is the option to do that?
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