Individual servers are instrumented by their manufacturers or by other companies that build an agent for a specific type of server. As with other managed elements, the element-centric instrumentation provides insight on the following:
Current behavior based upon CPU load, memory usage, network, and disc activity, for instance
Usage details, such as the number of users, threads, or processes
Environmental monitoring of temperature, power, and enclosure integrity
However, in a service-delivery infrastructure, such instrumentation of individual components is usually useful only after troubleshooting has narrowed the origin of a problem to a specific component. Instrumenting server tiers requires a different ...