If you do the SVMotion inside the same VNX5300 array then you are probably leveraging VAAI to offload the copy job to the storage array, so you should not see any noticable traffic on the host's iSCSI network at all.
For more information see this EMC white paper: http://www.emc.com/collateral/hardware/white-papers/h8293-vaai-vnx-wp.pdf