To save status changes for a KPI (persistent data), the KPI must be attached to a CI whose Save KPI over time data option has been selected.
To select this option, in the CI Customizations page, select a view, and then select one or more CIs in the left pane. Within the KPIs tab in the right pane, select the Save KPI over time data check box.
This data is used in the KPI Over Time dashboard. For details, see
KPI and HI Over Time Data Maintenance
Saving historical data for long periods of time or for many CIs and KPIs should be used with care because a lot of database disk space is required and overall performance can be affected.
When you no longer require data to be saved for a CI, clear the Save KPI over time data check box for that CI.
You can also adjust the time period for which KPI and HI over time data is kept in the database. By default, KPI and HI over time data remains for 60 days in the database before it is deleted. To adjust the retention period, modify the Retention period infrastructure setting in Distributed Online Business Logic Engine - Loader - KPI and HI Over Time. See also Infrastructure Settings.
Note The KPI Over Time dashboard displays no data the same color as OK Status data, meaning that the KPI data outside of the retention period will be displayed as green.