BeeGFS
German parallel filesystem for HPC — designed for easier deployment compared to Lustre. Open source, commercial support via ThinkParQ.
Developed at Fraunhofer ITWM Kaiserslautern (previously "FhGFS"). Differs from Lustre by being simpler to administer, can deploy all services on the same machine, "buddy mirroring" instead of complex resilience config. Common choice in smaller research HPC clusters (universities) where Lustre feels too heavy. Supports both data-line-based and metadata-based striping. Competition: Lustre, Ceph, Spectrum Scale (IBM GPFS).