/LIMIT[=n]

    Applies to Files-11 On-Disk Structure Level 2 (ODS-2) and Level 5
    (ODS-5) disks only.

    Specifies that the volume should be initialized with volume
    expansion. n defines the maximum growth potential of the volume
    in blocks. If no value is specified, the maximum expansion
    potential is set up.

    The maximum value depends on the value specified for /CLUSTER_
    SIZE:

    /CLUSTER_SIZE   8  1TB of expansion is set up.
    /CLUSTER_SIZE < 8  Expansion limit is set to
                       65535*4096*Cluster_value because the maximum
                       size of the bitmap is 65535 blocks.

    For more information about volume expansion, see the VSI Volume
    Shadowing for OpenVMS manual.

    The minimum allowed value is the largest of the following values:

    o  The value supplied with /LIMIT

    o  The physical disk size

    o  The size resulting from a 256-block BITMAP.SYS file (that is,
       256 * 4096 bits/block * Disk Cluster Value)

    If a value less than the minimum is supplied, the value is
    increased to the minimum. This value is displayed (in blocks) as
    the "Expansion Size Limit" in the output from a SHOW DEVICE/FULL
    command.

                                   NOTE

       If you specify /LIMIT and do not explicitly set a value for
       the following parameters, the defaults for these parameters
       are set as follows:

       o  /CLUSTER_SIZE: 16

       o  /MAXIMUM_FILES: 16711679 files

       o  /HEADERS: 0.5 percent of the size of the current device
          MAXBLOCK (an F$GETDVI item code)

          For example, for a 33GB disk, the default number of
          preallocated header blocks would be approximately 355000.