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What is GPFS

IBM General Parallel File System (GPFS) is a high performance parallel filesystem  featuring storage virtualization, high availability and is designed to manage large amounts of file data,  You can find out more about GPFS in this introduction.

 

  • Checking your gpfs quota with /usr/local/bin/myquota

    In this example, user gtsai will check her GPFS quota from a linux command line.


    # /usr/local/bin/myquota

     

    Displaying quota usage for user gtsai

                                  --------- Space (KB) ---------
      FileSystem          FileSet            Usage Quota                    Path
    ---------------- ---------------- ------------------ ------------------  ----------------------------------
           fermi-fs2            gtsai             39,328 1,048,576 /gpfs/slac/fermi/fs2/u/gtsai
             des-fs1            gtsai             39,328 3,145,728 /gpfs/slac/des/fs1/u/gtsai
           kipac-fs1            gtsai             39,328 2,097,152 /gpfs/slac/kipac/fs1/u/gtsai
             scs-fs1            gtsai                480 10,485,760 /gpfs/slac/scs/fs1/u/gtsai
           staas-fs1            gtsai                  0 20,971,520 /gpfs/slac/staas/fs1/u/gtsai
           staas-fs1            gtsai                  0 20,971,520 /gpfs/slac/staas/fs1/u/gtsai

     

 

  • GPFS building block

          Below is a schematic of a typical SCS GPFS storage building block.  It includes (2) redundant file servers, (2) redundant  storage servers and (2) storage arrays.  This example would provide 320 TB of space.  Local  iozone tests show max write ~4GB/sec , max read ~6GB/sec, using large block sequential I/O.

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