Gluster is an open source storage software platform that delivers scale-out storage for public, private and hybrid clouds. The software only solution runs on commodity compute and storage resources and is designed to allow performance and capacity to scale independently and deliver excellent performance across a wide range of workloads. Gluster provides enterprises the ability to easily adjust configurations to achieve the optimal balance between performance, cost, manageability, and availability. This paper discusses Gluster’s approach to performance, the factors that impact performance, and the results that customers should expect when adjusting those factors. The paper includes detailed performance results from both on-premise storage and Amazon Web Services cloud configurations.