Since you have gotton no replies, here's my best advice. At least, what I would do.
First off, I envied your 1.3TB drive until I heard of your 'issues' man, that must really suck ;-)
Anyhow, maybe it would be wise to break this drive up in to partitions.
Have the main parition (that has linux, and everything that goes with linux) on one partition.
Then, have a seperate parition (which is the bulk of the TB)
mount it as a second partition, then link to it with symbolic links
What on earth is on that system that is taking up 1.3TB of disk space?
Do you have a million user accounts (who's accounts are in the /home/) folder?
I'd try making a symbolic link...
for instance, if you have your big parition mounted under /mnt/bigass
ln -s /mnt/bigass/home /home
That should, in theory, make all files from now on written to /home actually write to the "large" partition you created.
I don't know if you get paid enough to go through the trouble to do this, but it'd probably be the best way to do it.