Hi,
I really hope i posted this on the right place 
When I add a host from a vCenter allready configured on the solarwinds system, the 'Pull for VMware' is allready marked with the note "Polling for this ESX Host is handled by vCenter using existing credentials."
My question is what credentials the system use? one of the credentials i pre-configured earlier on the system or the credentials the vCenter communicates with the host ( the credentials I added when i added the host to the cluster )
thanks in advance 