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How does Ceph perform when used in high-performance computing? This talk will cover a year of running Ceph on a (small) Cray supercomputer. I will describe how Ceph was configured to perform in an all-NVME configuration, and the process of analysis and optimisation of the configuration. I'll also give details on the efforts underway to adapt Ceph's messaging to run over high performance network fabrics, and how this work could become the next frontier in the battle against storage performance bottlenecks.