IT-operations distinguish between two types of outages: planned and unplanned. Planned Outages are necessary to carry out essential maintenance. But the monitoring system initially cannot know if a detected outage was planned or not. If a monitor/ service is removed from the network, or rebooted, for maintenance, then you will see unnecessary alarms indicating that the monitor or application is unavailable when polled for status.
With the concept of scheduled downtimes in Applications Manager, the system can be informed of planned outages by a host or service by defining a scheduled downtime for the corresponding object. To prevent the monitors/services from being monitored for status during maintenance, you can schedule a maintenance task for such monitors.
The Downtime Schedules page displays 4 tabs:
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