An enterprise, high available deployment of Lync Server requires deploying multiple servers in Front End pools, Director pools, and or Edge Server pools. Load balancing is necessary when using multiple servers in a pool as the load balancer distributes traffic among the servers.

Microsoft Lync Server 2010 supports two load balancing solutions: DNS load balancing and hardware load balancing. You can choose different load balancing solutions for each pool in your deployment. Hardware load balancers are also required to provide load balancing for the internal and external web services when DNS load balancing is used.

The LoadMaster combines versatility with ease-of-use to speed deployment of the complete portfolio of advanced messaging applications and protocols used by Microsoft Lync Server 2010. Layer 7 health checking at the LoadMaster ensures that should one of the servers become inaccessible, the load balancer will take that server off-line, while automatically re-routing and reconnecting users to other functioning servers.

The entire LoadMaster product family, including the Virtual LoadMaster (VLM) supports Microsoft Lync 2010.

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