If you look at the output of df -h you will see that the size of the
partition is 219GB there is only 168MB in this partition yet there is only
208GB left. This is a new server and that partition has only had things
added to it, nothing has ever been removed.
By my calculations there should be 218.8GB left, so if not the rest must be
filesystem overhead. 5 percent seems to be a bit much, but as long as I can
explain it I may be able to live with this. That is why I want a link to a
site that could explain the overhead of the ext3 filesystem.