Cool.  Didn't know about that option.  I did notice that -H makes it look more impressive.  

computer:~ bmfrosty$ df -H /Volumes/DAMAGE\;NAS-01-0A-51/
Filesystem                             Size   Used  Avail Capacity  Mounted on
//DAMAGE;BMFROSTY@NAS-01-0A-51/MEDIA   1.5T   982G   472G    68%    /Volumes/DAMAGE;NAS-01-0A-51
computer:~ bmfrosty$ df -h /Volumes/DAMAGE\;NAS-01-0A-51/
Filesystem                             Size   Used  Avail Capacity  Mounted on
//DAMAGE;BMFROSTY@NAS-01-0A-51/MEDIA   1.3T   915G   439G    68%    /Volumes/DAMAGE;NAS-01-0A-51
computer:~ bmfrosty$ 
Unfortunately counting bytes in base 10 is silly, but I guess it makes the numbers on the hard drive boxes look more impressive.