To understand the SAM system it is important to first understand a number related concepts. This page explains the most important ones.

Topology, Sites, and Services

Metrics, Probes, and Results

Status, Availability, and Reliability

• Status is the status of service instances, overall service flavours, and sites at a given point in time
• Availability is the fraction of time a service was up during the period the service was known
• Reliability is the fraction of time a service was up during the period the service was scheduled to be up
           

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