Don't forget to edit the 'global' file to set this variable
# FileMediumCapacity=MaxSizeInMBytes
Calculate how much backup data you are going to be testing with. Then, make a copy of this line, edit one of the lines to remove teh # sign and the 'space' that follows, and a value a little greated than what you are going to be testing with
For example, if testing with 55GB
FileMediumCapacity=57000
# FileMediumCapacity=MaxSizeInMBytes
Save the file, stop and restart DP