If we plan to take a device out of service for maintenance or other scheduled down time, we can set up a maintenance window so that Zenoss Core does not alert us of a problem when our scheduled maintenance starts. Using a maintenance window also helps ensure that the availability reports show accurate numbers. We'll cover reports in Chapter 10, Reviewing Built-in Reports. We define maintenance windows via the Administration properties of devices, device classes, systems, groups, or locations.
Let's walk through a quick example using a device of your choice: