Servers

Correcting Vibration-Induced Performance Degradation in Enterprise Servers

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Executive Summary

Server fan subsystems are power-hungry and generate vibrations, degrading the performance of data-intensive workloads and inflating the uptime electric bills of cost-sensitive datacenters. In this paper, the authors demonstrate a systematic server measurement methodology to isolate different types of vibrations and quantify their effect on hard disks. They introduce a thermal and cooling management policy that mitigates vibrational effects workload scheduling and fan control, and study the benefits of a hybrid storage array with Solid-State Drives (SSDs) that are impervious to vibrations. They achieve performance improvements of up to 73% and energy savings of up to 76% over the state of the art, while meeting thermal constraints and improving the system's resilience to both internal and external vibrations.

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