> ### Creating a resource monitoring plan

> When you create a monitoring plan, you provide both a monitoring definition and one or more rule definitions.

> The monitoring definition includes:

> - The schedule selected from all the schedules that are available. The schedule specifies when the plan is active, and the available schedules include only those schedules that do not overlap with schedules already in use for a resource.
> - A polling interval, which indicates the frequency with which this resource's rules are checked by Fathom.
> - An option to enable alerts for this resource. Enabling alerts means that alerts will be generated while the plan is active.
> - An option to store, or trend, the performance data collected by this resource to the FathomTrendDatabase while the plan is active. See the "Trending considerations" section for details.
> - The number of polls after which performance data will be trended to the FathomTrendDatabase.

> The rule definition identifies:

> - When to generate an alert for the resource.
> - What level of alert severity will cause Fathom to generate an alert.
> - The number of failed polls after which Fathom generates an alert.
> - The action that Fathom performs when an alert is generated.
> - The number of successful polls after which Fathom clears an alert.
> - The action Fathom performs when an alert is cleared.

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