[Users] Adding additional network(s)

Hi I am setting up another DC, that is managed by my sole management node, and this DC will have a requirement that the VM's will need an additional storage NIC. This NIC is for NFS/CIFS traffic and is independent of the oVirt VM's disks. I have cabled the additional physical NIC in the HV's as this network is non routed storage, and I where to go from here. Whats the next step needed to add the NIC to the DC and then i presume adding the NIC to the VM's is straight forward. thanks