Fan-Speed-Aware Scheduling of Data Intensive Jobs
As server processor power densities increase, the cost of air cooling also grows resulting from higher fan speeds. The authors' measurements show that vibrations induced by fans in high-end servers and its rack neighbors cause a dramatic drop in hard disk bandwidth, resulting in a corresponding decrease in application performance. In this paper, they quantify the performance and energy cost effects of the fan vibrations and propose a disk performance aware thermal, energy and cooling technique. Results show that they cannot only meet thermal constraints, but also improve performance by 1.35x as compared to the conventional methods.