Aggregation and numerical formula rules overview

This topic describes aggregation and numerical formula rules.

Aggregation and numerical formula rules are sets of properties and conditions used by TBSM to aggregate and otherwise combine parameters related to the state of a service. These parameters consist of general, detailed, or both state information generated by incoming status rules or other aggregation and numerical formula rules.

You use aggregation and numerical formula rules as part of a logical model that takes information derived from ObjectServer events and other incoming data and uses it to determine different aspects of the status of a service. The rule definitions depend on how you want to aggregate or otherwise combine this information.

You define aggregation and numerical formula rules when you create or edit a service template. Each template can have any number of associated aggregation and numerical formula rules. You can configure TBSM to display the results of these rules in the Service Tree or Service Viewer. This display allows users to view and respond to changes in the general or detailed state of the service in real time.

Note: If you change rule or template names, you can cause issues with other features of TBSM. TBSM uses these names to reference the rule values for other rules, such as auto-population or ESDA rules and for custom displays such as service trees and view definitions.

If you want to change a rule or template name, change the name before you use the rule or template elsewhere in TBSM.

For example, when you create numerical and text-based rule, you need to create a custom service tree or view definition to display the output of the rule in the TBSM console. The trees and view definitions use the template and rule names to map the rule values to a display object. As a result, if you change the name of a rule or a template used in a custom display, the custom tree or view definition will no longer display the rule values properly.