> ### Fathom resource monitoring overview

> Fathom uses active monitoring plans and their associated rules to support many fundamental resource-related features, including:

> - Data trending
> - Rule evaluation
> - Data analysis
> - Alert notification

> When Fathom discovers any of the OpenEdge resource types, it automatically creates a resource monitoring plan. The default values Fathom provides includes a default name for the resource, and default values for each individual resource's monitoring plan and its associated rule set.

> For example, if Fathom discovers a NameServer resource whose server name is NS2, then it creates a monitoring plan called the NS2 monitoring plan and immediately associates the default NameServer rule set with NS2. (Since Fathom supports changing any Fathom resource monitoring plan, you can edit or modify any OpenEdge monitoring plan and rules, setting your own values at any time.)

> Other resource types that Fathom can recognize—database, system, network, and file resources —also require monitoring plans and rules with which these standard resource monitoring activities can occur. Within the Fathom Management framework, all Fathom resources share standardized ways to perform various operations and a common terminology with which to reference these resource activities.

> Review the resource monitoring features, and key terms and concepts about resource monitoring highlighted in this section; this information will help orient you to the basics of Fathom resource monitoring. Then, perform the procedures outlined in the "Maintaining monitoring plans" section and the "Understanding and using resource monitor rules" section to actually apply these concepts to work with the WebSpeed brokers, AppServer brokers, and NameServer resources.

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