关键词：资源阈值；虚拟机的阈值；门限方案；云计算
摘 要：More and more businesses and government agencies migrate applications to the cloud to savecosts and physical space through virtualization. Unfortunately, many organizations still employa "reactive" response when a failure occurs instead of taking more prudent proactive step: Thecreation of threshold criteria for critical cloud components. The author illustrates cloud-specificthreshold criteria and scenarios of what proactive actions can be taken when failures happen.