Nathan；

VSS、VDS的差異，詳細可以參考：
http://wiki.weithenn.org/cgi-bin/wiki.pl?VMware_Networking

VDS：需要Enterprise Plus授權

功能差異說明：
 網路可以做NIC進行網點容錯，但是無法頻寬合併，
 需要透過VDS執行link aggregation功能，才可以做到頻寬合併的效果。

參考：
https://communities.vmware.com/thread/456488?start=0&tstart=0

> For link aggregation you'll either need the Cisco Nexus 1000V add-on or vSphere 5.1 with vDS (vSphere Distributed Switch). Prior versions allowed to setup LACP in
static mode only. In both cases you need to have "Enterprise Plus" licenses for the hosts and vCenter Server in place.