Let's say you have 192.168.0.201 configured as the ip for svifa. It might look something like this:
ifconfig svifa 192.168.0.201 netmask 255.255.255.0 up
You can then add some additional ip addresses like this:
ifconfig svifa alias 192.168.0.202
ifconfig svifa alias 192.168.0.203
ifconfig svifa alias 192.168.0.204
When VSC provisions a new datastores, it will mount them like this:
192.168.0.201:/vol/newDatastoreA
192.168.0.202:/vol/newDatastoreB
192.168.0.203:/vol/newDatastoreC
192.168.0.204:/vol/newDatastoreD
If you start a VM on newDatastoreA and one on newDatastoreB, you should see ESX using 2 different ethernet interfaces.