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29 Dell HPC NFS Storage Solution – High Availability (NSS7.0-HA) Configuration
A.4. The dd Linux utility
dd is a Linux utility provided by the coreutils rpm distributed with RHEL 7.2. It was used to copy a file. The
NFS file system was mounted at /mnt/xfs on the clients.
 To write data to the storage, the following command line was used:
# dd if=/dev/zero of=/mnt/xfs/file bs=1M count=90000
 To read data from the storage, the following command line was used:
# dd if=/mnt/xfs /file of=/dev/null bs=1M