Monitor Data Automatic Purge of Aged Data
Monitor data can be summarized on a periodic basis and the detail data can be optionally removed after some period of time. This aggregation is done per Monitor. Note that if a monitor server has more than one host, such as when specified by a Monitoring Server Group, then host level information is not stored with these aggregates.
There are two settings to support this functionality that can be found in the Central list > Monitor, lower panel > General tab:
This is the period for which monitor sample data should be aggregated. The default is every 10 seconds. Use a higher number if the trend analysis would not find 10 seconds to be significant. Using a period that is less than the monitor sample rate will provide no benefit.
Detail Data Retention Period
Specifies how far back to retain detail monitor sample data. Defaults to –1 (do not purge detail data). Setting this to 0 will not store any detail data. Setting to a positive number (e. g. 30) will retain detail data for that number of minutes.