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7.3.2 Ease of useOften a limitation is placed on a WebSphere infrastructure architect such that the infrastructure must fit within an available set of machines. Even when a system is up and running, it can be difficult to expand upon it; limitations exist so it is difficult to purchase more machines, or data center floor space may become an issue. At such times, compromises are often made that result in applications with different non-functional requirements being co-located. With logical partitioning and shared CPU LPARs, however, the ability to simply add a new LPAR and assign it resources, possibly taking unused resources from existing applications, is extremely useful in situations such as these. If we need to add a second "machine" to the infrastructure for application alpha, all we need to do is create a new LPAR and configure it into the WebSphere cell, as depicted in Figure 7-2.
Figure 7-2 A second LPAR is configured for application alpha |
