Does the above command creates VLAN 710 on the netapp ?
This creates virtual (tagged) VLAN port for VLAN 710 over physical NIC e0a. It will help if you try to learn cDOT networking architecture and use correct terms. Start with Network Management Guide, Understanding the network configuration chapter.
You may need to add new VLAN ports to Servers broadcast domain first. Then you can migrate LIFs using above command and do not forget to modify LIFs home ports as well.
What I wonder - if you already reconfigured switches for new VLAN you should have lost connectivity over old VLAN. If you still did not commit switch configuration you can do it NIC by NIC - migrate LIFs off first port, change VLAN configuration on switch, create new VLAN port on filer, migrate LIFs back to new port. This should be fully transparent as long as switch configuration is correct.