Gluster is an open source storage software platform that delivers scale-out storage for public, private and hybrid clouds. It allows enterprises to combine large numbers of commodity storage and compute resources into a high performance, virtualized and centrally managed pool of file-based storage. Both capacity and performance can scale independently on demand, from a few terabytes to multiple petabytes, using both on-premise commodity hardware and public cloud storage infrastructure. By combining commodity economics with a scale-out approach, customers can achieve radically better price and performance, in an easy-to-manage solution that can be configured for the most demanding workloads. This document discusses some of the unique technical aspects of the Gluster architecture, discussing those aspects of the system that are designed to provide linear scale-out of both performance and capacity without sacrificing resiliency.