Lustre® File System Version 2.5 Released

January 16, 2022

Hierarchical Storage Management feature automatically moves data between high-cost and low-cost storage media

Beaverton, OR — November 5, 2013 — Open Scalable File Systems (OpenSFS), the premier non-profit organization advancing and coordinating the Lustre® file system community, is pleased to announce the availability of the Lustre 2.5 software release. In recent years the Lustre 2.x release series has delivered major new features and enhancements, enabling success of the Lustre file system not only in demanding HPC environments, but also the challenging world of Big Data and Enterprise computing.

With the release of Lustre 2.5, yet another major milestone has been reached – delivering the highly anticipated Hierarchical Storage Management (HSM) functionality, often a core requirement in enterprise environments. With HSM, customers can now easily implement tiered storage solutions in their operational environments.

Galen Shipman, Chairman of OpenSFS, states “Lustre 2.5 is an important release for enterprise users. HSM allows organizations to define policies to optimize the cost-effectiveness of their storage usage. This is extremely useful for heterogeneous enterprise storage environments.”  Shipman also noted “HSM provides a major incentive for long-time users of the Lustre 1.x branch to upgrade. Lustre 2.5 is a major step forward for the Lustre file system.”

Much of the primary Lustre HSM development is credited to the talent and effort of the French Alternative Energies and Atomic Energy Commission (Le Commissariat à l’énergie atomique et aux énergies alternatives, or CEA), with OpenSFS engaged in coordinating test activities, providing a test cluster to validate functionality, plus close OpenSFS involvement in community vetting and testing of the entire Lustre 2.5 release.

Lustre 2.5 also begins the next OpenSFS-designated Maintenance Release branch of Lustre. The community Lustre release roadmap is available at the Lustre community website:

Lustre 2.5 is available for immediate download at:

About Lustre

The Lustre file system is an open-source, parallel file system widely deployed at major computational centers worldwide, including many of the Top500. Currently seven of the TOP10 supercomputing sites, and over 60% of TOP100 sites, utilize Lustre. OpenSFS plays a pivotal role in the open source Lustre community, through roadmap definition, funding of feature releases, and key OpenSFS Working Groups, including the Technical Working Group (TWG) defining new Lustre features and path forward, and the Community Development Working Group (CDWG) coordinating execution of development and releases.

 About OpenSFS

Open Scalable File Systems, Inc. is a strong and growing nonprofit organization dedicated to the success of the Lustre file system. OpenSFS was founded in 2010 to advance the Lustre file system, ensuring it remains vendor-neutral, open, and free. Since its inception, OpenSFS has been responsible for advancing Lustre and delivering new releases on behalf of the open source community. Through working groups, events, and ongoing funding initiatives, OpenSFS harnesses the power of collaborative development to fuel innovation and growth of the Lustre file system worldwide.

* All trademarks are the property of their respective owners. OpenSFS is a registered trademark of Open Scalable Files Systems, Inc. Lustre is a registered trademark of Xyratex Technology, Ltd., in the United States. For more information visit