Downtime refers to periods when a system, network, or application is not available to the user because of known or unknown reasons. Downtime is important for calculating the availability of a system, application, or network, which is typically expressed as the percentage of uptime in a given period. When using SHR to generate service-level agreement (SLA)-based reports, there is a need to exclude the predefined downtime to provide accurate availability information. This is because downtime can skew the CI data in the reports.
In SHR, there are two types of downtime:
Downtimes are configured based on associated CIs. For example, you might want to exclude a recurring maintenance event or a holiday for a specific host CI whose physical host you know will be down for that period of time.
SHR enables you to:
The downtime information is defined for each CI in an XML file, where you must manually specify the downtime period, the duration, and the specific instances of the CIs. SHR uses this XML file to update the collected fact data with the downtime information before loading the data into the database.