what NIC(s) does VDR v2 use to move data?

Hi all,

We use VDR version 2 and I was wondering what NIC does it use to pull the snapshot data? My guess is all that traffic stays on the iSCSI NIC since it is pulling the info from the VMDK file and the VDR appliance has direct access to the iSCSI vmfs volumes that it is backing up.

Thanks