You can configure Network I/O Control to allocate certain amount of bandwidth for traffic generated by vSphere Fault Tolerance, vSphere vMotion, and so on.
You can use Network I/O Control on a distributed switch to configure bandwidth allocation for the traffic that is related to the main vSphere features:
- Fault Tolerance
- vSphere Replication
- vSphere Data Protection Backup
- Virtual machine
vCenter Server propagates the allocation from the distributed switch to each physical adapter on the hosts that are connected to the switch.