Monitoring the impact of events on a business service

Using CMDB Impact Simulator with BMC SIM

If you have BMC SIM installed, CMDB Impact Simulator uses the impact relationships that you have configured by using the BMC Impact Model Designer, the impact relationships added by using CMDB Explorer, and the impact relationships that are automatically created in the BMC CMDB or imported to the BMC CMDB.

You can use CMDB Impact Simulator to test different impact scenarios before deploying those scenarios in your production environment. The following features of BMC SIM are not used with CMDB Impact Simulator:

• BMC SIM schedules
• Custom propagation models
• Custom status computation models
• Custom status states
• Dynamic priorities

Using CMDB Impact Simulator without BMC SIM

If you do not have BMC SIM installed, CMDB Impact Simulator uses the impact relationships that you have created in the BMC CMDB through CMDB Explorer or through the dynamic service modeling function of the Service Catalog.

For more information about creating impact relationships, see Creating relationships between CIs.

Using CMDB Impact Simulator with data discovered by BMC Discovery

BMC Discovery can discover CIs and their relationships. CMDB Impact Simulator can leverage these relationships, as in the following example and diagram:

1. BMC Discovery discovers the Helpdesk application along with its components and their relationships.
2. The discovered items are synchronized with CMDB and assigned under classes. A service titled ‘Helpdesk Service’ is created and related to the components discovered by BMC Discovery.
3. The CMDB Impact Simulator is run.
   For more information about running a simulation, see Running an impact simulation
4. The CMDB Impact Simulator assists in finding the components that are affected by the server component.