VMware vCloud Director Documentation Center
The link above details detaching a vcenter from vcd
Remove a vCenter Server
You can remove a vCenter Server to stop using its resources with vCloud Director.
Prerequisites
Before you can remove a vCenter server, you must disable it and delete all of the provider vDCs that use its resource pools.
Procedure
1 Click the Manage & Monitor tab and click vCenters in the left pane.
2 Right-click the vCenter Server name and select Detach.
3 Click Yes.
Regards
Chris
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Chris Neale
VCIX6-NV;vExpert2014-17;VCP6-NV;VCP5-DCV;VCP4;VCA-NV;VCA-DCV;VTSP2015;VTSP5;VTSP4
http://www.chrisneale.org
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