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Alert impact calculation

Alert impact calculation

Impact calculation shows the magnitude of an outage on CIs, services, alerts, and alert groups. As an alert generates, factors such as impact rules and CI relationships are used to calculate the severity. The alert severity is then displayed on the impact tree, business service or manual service maps, and dashboards.

Impact calculations are available for business services, manual services, and alert groups. The following factors are used to calculate the overall impact of an outage.
  • Impact rules.
  • Number of related active alerts.
  • Past history of the affected CI.
  • Relationships between CIs for a particular business service or manual service.
  • If the CI element includes a network or storage devices.
  • If the CI is in maintenance. When the CI is in maintenance, alerts on the CI are excluded from impact calculation.
    Note: Starting with the Helsinki release, CIs are considered to be in maintenance not only when an active change request is scheduled, but also when the Status field of the CI is set to In Maintenance. In both cases, the CI is excluded from impact calculation and alerts for the CI do not appear in the Alert console.
    Note: When a child CI is put in maintenance, it also puts the parent CI in maintenance.

If there is a connection between services, the impact of one service on the other is also calculated.

Figure 1. Impact calculations use information from various sources to set the alert severity
Impact status is based various factors