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Microsoft® Lync® Server 2013 Unleashed Second Edition by Randy Wintle, Alex Lewis, David Ross, Tom Pacyk

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Lync Front End Server High-Availability

Providing high-availability to Lync Front End Servers is the core of a Lync high-availability design. Front End Servers run nearly every critical service in a Lync deployment, and without access to a Front End Server, users cannot even sign in. Lync Front End Servers can be configured in the topology as pools. These pools can contain up to 20 servers, allowing for increased scale and redundancy.

Lync Server 2013 allows for load balancing Front End Server pools using two methods, DNS load balancing and hardware load balancing.

DNS Load Balancing

DNS load balancing is the primary, and preferred, method for providing high-availability to Lync Front End Server pools. DNS load balancing leverages DNS round ...

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