Lustre

Lustre is a parallel-distributed filesystem driven by the open source community and is available under GNU General Public License (GPL). Lustre relies on a single server for storing and managing metadata. Thus, I/O requests from the client are totally dependent on a single server's computing power, which can be a bottleneck for enterprise-level consumption. Like iRODS and HDFS, Lustre is better suited to a small number of large files than to a more typical mix of numbers files of various sizes. Like iRODS, Lustre manages an index file that maps filenames to physical addresses, which makes its traditional architecture prone to performance bottlenecks. Lustre lacks a mechanism for failure detection and correction: when a node fails clients must connect to another node.