dumptab(4)                       DG/UX R4.11                      dumptab(4)


NAME
       dumptab - tape table file for dump2

DESCRIPTION
       /etc/dumptab is an ASCII file containing an entry describing media
       characteristics for each medium type available to dump2.

       This table file contains lines in one of three formats:

         a.  comment lines (must start with a "#")

         b.  lines specifying the buffer size and capacity of the medium:

                           medium-name  buffer-size  capacity

         c.  lines specifying the default device, buffer size, and capacity
             for the medium:

                   medium-name  default-device  buffer-size  capacity

       Fields are separated by white space.  The fields are described below:

       medium-name
                 descriptive label for the medium.

       default-device
                 default device for this medium.  This is the device that
                 will be used if no other device is specified on the dump2
                 command line.  If this field is not present, dump2 uses
                 /dev/rmt/0 as the default device.

       buffer-size
                 size (in 1024-byte blocks) of the buffers written to the
                 medium.

       capacity  formatted capacity of the medium (in bytes).  The capacity
                 can also be specified as a number followed by a upper or
                 lowercase b, k, m, or g to indicate bytes, kilobytes,
                 megabytes, or gigabytes, respectively.  If the medium
                 capacity is variable or unknown, a value of 0 (zero) should
                 be entered here.  If 0 is specified, the estimate of the
                 number of tapes needed, which is normally reported by dump2
                 when the dump begins, will be suppressed.  An example where
                 0 is needed is when writing to a device which performs data
                 compression; since the capacity is variable, you should not
                 specify one.

SEE ALSO
       dump2(1M).


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