Lustre

Definition

Lustre is an open-source parallel distributed file system designed for large-scale cluster computing. It powers over 60% of the world’s top 100 supercomputers. Lustre separates metadata operations (handled by MDS) from data storage (handled by OSS/OST), enabling linear throughput scaling by adding storage servers. It supports POSIX semantics and can deliver aggregate bandwidth exceeding 1 TB/s.

Written by
Daniel Kovacs

Updated Feb 11, 2026

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