The thermal events are the strongest diagnostic indicator in the scenario and should direct troubleshooting toward the server's cooling environment before workload-level tuning . Excessive temperature can cause processor or accelerator thermal throttling, which directly produces intermittent performance degradation and latency spikes even when CPU, memory, GPU, and storage utilization otherwise appear normal.
Cisco's C-Series installation requirements emphasize correct airflow and specifically warn that obstructing server ventilation can cause overheating, higher fan speeds, and increased power consumption. Cisco's C885A M8 documentation, representative of modern AI-oriented UCS C-Series platforms, specifies twelve hot-swappable system fans for proper front-to-back cooling.
Therefore, the administrator should first inspect ambient temperature, cold-aisle/hot-aisle conditions, physical airflow, obstructions, and fan health. Any failed fan should be replaced promptly.
Option A is a sensible performance-analysis step when there is no stronger hardware fault indicator, but repeated thermal events make it secondary here. Storage inspection in option B is not supported by the symptoms. Option C focuses on power delivery, yet the event evidence specifically points toward thermal management rather than insufficient PSU capacity.
Troubleshooting should follow the fault evidence, beginning with the lowest-level physical condition that can explain the observed symptoms.
Study Guide Reference: AI Infrastructure Operations and Troubleshooting — UCS health monitoring, environmental faults, thermal conditions, and performance troubleshooting.
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