The benefits of capacity analysis and performance optimization are almost inconceivable. Capacity analysis helps define and gauge overall system health by establishing baseline performance values, and then the analysis provides valuable insight into where the system is heading. Continuous performance monitoring and optimization will ensure systems are stable and perform well, reducing support calls from end users, which, in turn, reduces costs to the organization and helps employees be more productive. It can be used to uncover both current and potential bottlenecks and can also reveal how changing management activities can affect performance today and tomorrow.
Another benefit of capacity analysis is that it can be applied to small environments and scale well into enterprise-level systems. The level of effort needed to initially drive the capacity-analysis processes will vary depending on the size of your environment, geography, and political divisions. With a little up-front effort, you’ll save time, expense, and gain a wealth of knowledge and control over the network environment.
Source of Information : Sams - Windows Server 2008 R2 Unleashed