What type of failover policy (active-active / active-standby) do I need for a VSAN portgroup on my vDS?
It depends on your scenario. Here is a good example of config, hopefully it will help you:
VMware vSphere 5.1
Thanks for the link. It seems the link is discussing fault tolerance. I don't see any reference to vSAN though - I'm not sure this part of the documentation is dealing with how to configure virtual networking for vsan....