Microsoft® Lync Server 2010 Unleashed

Networking Requirements

A fairy strict suggestion from Microsoft around network adapters is that a dedicated network adapter should be used for each Lync virtual machine. In a traditional virtualization environment, most virtual machines share traffic through a single or teamed set of physical network adapters. Virtual machines compete for network bandwidth resources through the same physical links and can be subject to delays or queues when other virtual machines have heavy bursts of traffic.

Caution

To avoid Lync Servers being affected by these contention issues, Microsoft recommends providing a dedicated physical adapter for each Lync virtual machine. This ensures that each Lync Server has a direct connection to a switch that can help eliminate ...