Resource Optimization and Energy Saving in Clusters Using Virtualization

This work proposes a reusable architecture that enables the management of a supporting infrastructure for Web server clusters using virtual machines. The goal of the architecture is to ensure service quality, evaluating how broadly it complies with the operating restrictions (maximum response time) and proportionally acting on physical servers (hosts) or manipulating the virtual machines. In addition, through the rational use of resources, the proposal aims at saving energy. A prototype of the architecture was developed and a performance evaluation carried out. This evaluation shows that the proposal is fully functional and how advantageous it can be in terms of using resources, avoiding waste, yet maintaining the application´s service within acceptable quality failure levels.