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A Red Hat training course is available for Red Hat Gluster Storage

4.4. pNFS

The Parallel Network File System (pNFS) is part of the NFS v4.1 protocol that allows compute clients to access storage devices directly and in parallel.
For more information, see the Red Hat Gluster Storage 3.1 Administration Guide: https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3.1/html/Administration_Guide/sect-NFS.html#sect-NFS_Ganesha