Even the largest HPC clusters can experience degradation due to poor I/O performance. This occurs as massive amounts of data and increasingly large individual files combine with limited disk drive hardware capacity to cause significant bottlenecks. Lustre* is an open source parallel file system that improves the overall scalability and performance of HPC clusters. It provides cluster client nodes ...with shared access to file system data in parallel, greatly increasing throughput and performance. Lustre is the most widely used HPC storage system in the world—with parallel storage capabilities utilized by over 50% of HPC deployments—and can scale to tens of thousands of clients.