After a period of usage, you can develop an awareness of what levels to set for OS resource utilization attribute values. You can adjust thresholds once you determine more closely what value indicates a genuine justification for an event to be generated and for a notification to be sent to your pager or email address. For example, you might want to receive notifications every time a certain attribute reaches a warninghigh severity threshold level.
For important or crucial attributes at your installation, you can set the warninghigh threshold level to a low percentage value so that you are notified about a rising value as early as possible.