If you change your hardware configuration without reinstalling your hypervisor you might run into an issue with the nic or hba port numbering. The ESXi host writes the PCI bus to vmnic mapping to a special configuration file. If you change the pci slot from your dual port nic for example you end up with 2 new vmnics.
The configuration file is located at /etc/vmware/esx.conf
Change vmnic numberingRead More »ESXi: Change vmnic / vmhba numbering