What system is used to notify administrators about nearing capacity limits that might affect SLA parameters?

The most appropriate system to notify administrators about nearing capacity limits that could impact Service Level Agreement (SLA) parameters is a Usage Monitoring System. This system actively tracks resource consumption and performance metrics, providing valuable insights into usage patterns and potential bottlenecks.

By monitoring usage in real-time, the Usage Monitoring System helps ensure that resources are effectively aligned with the organization's service commitments outlined in the SLA. This proactive approach allows administrators to address capacity concerns before they translate into service disruptions.

While OS logging, Resource Management Tools, and Performance Analyzers may contribute to various aspects of capacity monitoring and resource management, they don’t specifically focus on the comprehensive tracking of usage trends and alerting administrators when limits approach thresholds critical to SLA compliance. Thus, the Usage Monitoring System stands out as the specialized solution for maintaining operational efficiency and service quality.