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IBM WebSphere: Deployment and Advanced Configuration by Roland Barcia, Keys Botzum, Tom Alcott, Bill Hines

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Chapter 21. WAS Network Deployment Clustering

The ability to cluster applications and the application servers hosting them is essential in providing a scalable and fault-tolerant infrastructure that is not constrained by a Single Point of Failure (SPOF). In Chapter 20, “WAS Network Deployment Architecture,” we made brief mention of clustering and WAS-ND workload management (WLM). In this chapter, we'll delve into the underlying architecture used for clustering in WAS-ND as well as other technologies that may be required to build a truly fault-tolerant and scalable infrastructure. We'll also discuss possible deployment topologies as well as how and why you might choose one topology over another.

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