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MCTS Windows Server® 2008 R2 Complete: Study Guide by William Panek

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Achieving High Availability with Network Load Balancing

Some applications that need to be highly available do not require failover clustering, such as applications based on web services. These applications typically are able to use Network Load Balancing to balance connections across a number of server nodes. This is more easily done with applications that are session-less or have a minimal amount of session data.

An NLB cluster load-balances client TCP/IP connections between cluster nodes and does not share any application data between nodes. If application data needs to be shared between cluster nodes, another facility such as replication will need to be used, or the application will need to be able to retrieve this data. This can be accomplished ...

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