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Ceph Cookbook - Second Edition by Karan Singh, Michael Hackett, Vikhyat Umrao

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Partitioning Ceph OSD data

OSDs are the real workhorses that store all the data. In a production environment, you should use an enterprise, cloud, or archive class hard disk drive with your Ceph cluster. Typically, desktop class HDDs are not well suited to a production Ceph cluster. The reason being that in a Ceph cluster, several hundreds of rotating HDDs are installed in close proximity, and the combined rotational vibration can become a challenge with desktop-class HDDs. This increases the disk failure rate and can hinder the overall performance. The enterprise-class HDDs are purposely built to handle vibrations, and they themselves generate very little rotational vibration. Also, their Median Time Between Failure (MTBF) is significantly ...

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