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Web site performance is critical to any business that has a presence on the Internet. Today's increased volume of Internet traffic is placing demands on web sites to handle a wide variety of service request while maintaining a high level of performance. Load balancers enable you to distribute IP traffic across multiple identical web servers. Balancing the load in this way provides exceptionally fast web access and response times resulting in better service and increased customer satisfaction. An easy and effective way to achieve availability and reliability is to use redundant servers. If you have more than one server implementing your site, and then one of the servers crashes, the processing requests can be redirected to another server. This provides a highly available Web site. In order to achieve true Load Balancing, servers must be configured as cluster nodes. Clustering provides users with constant access to important server-based resources. With clustering, two cluster nodes appear to users as one server. If one of the nodes in the cluster fails, the other node begins to provide service in a process known as failover. By providing redundant servers, clustering virtually eliminates most of the reliability issues with an individual server. With load balancing you can rely on: Scalability - Load Balancing scales the performance of a server-based program, such as a Web server, by distributing its client requests across multiple servers within the cluster. As traffic increases, additional servers can be added to the cluster with up to 32 servers possible in any one cluster. High availability - Load Balancing provides high availability by automatically detecting the failure of a server and repartitioning client traffic among the remaining servers within ten seconds, while providing users with continuous service. There are number of ways of implementing load balancing. These are: • Windows 2000 Network Load Balancing |
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