I have yet another update.
The issue has something to do with maximum allowed disk size. I am not sure if it is an issue with kubutu or with my motherboards bios, however, when I set this raid controller up to auto carve luns out of my 6 terabyte drive, I can install Kubuntu. Now I am following the advice shown below on how to partition those drives so that they can be best utilized for storing media.
I will update this post as things progress.
From "blog gelusi: Linux Tuning Guide" (http://gelusi.blogspot.com/2008/02/linux-tuning-guide.html
For filesystems dedicated to serving fairly large files, adopting a larger than default 1024 byte block size may yield significant
Recent transactions on the linux kernel list suggest that setting the block sizein an ext2 file system to 4096 instead of the
default 1024 will result in less file fragmentation, faster fsck's, faster deletes and faster raw read speed, due to the reduced
number of seeks.
Unfortunately this cannot be changed on the fly. Only a reformat will make this so. The command to format a file system with 4096
byte blocks is: mke2fs -b 4096 /dev/whatever
Additionally, on any filesystems except those used for logfiles, the default of 5% reserved for root use is excessive for large
file systems, so the command to make the filesystem can be augmented to mke2fs -b 4096 -m 1 /dev/whatever
to set the reserved fraction to 1 percent.
Then if you want a journaling (ext3) filesystem: mke2fs -b 4096 -m 1 -j /dev/whatever