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WAN optimization is a phrase used to describe applications and products used to manage and accelerate the flow of data across a wide-area network (WAN). Some specific technologies used in WAN optimization include the following:
Windows ServerÂ® 2008 provides two clustering technologies: failover clusters and Network Load Balancing (NLB). Failover clusters primarily provide high availability; Network Load Balancing provides scalability and at the same time helps increase availability of Web-based services.