True Image 2011 Nonstop Backup Fails

I have TIH 2011 with PlusPack installed on my computer running Win 7 x64. I am attempting to back up two drives on my computer.

1. Disk C an SSD. This one worked. No problems.

2. Disk D a pair of 750 GB drives set up for RAID 0 using Windows Disk Management. On a previous installation of Windows I was able to get this to back up using nonstop backup.

On the current install, it is a complete failure. When Windows was first installed this time nonstop backup ran for something like 48 hours and only copied about 1 GB of data (it didn't stop immediately after starting, it was just incredibly slow). I tried to remove the backup using TIH, but it again went incredibly slowly. So I stopped everything. Wiped my backup drive. Backed up C again, and then tried to back up D. Nonstop backup failed over and over. It would run for a few minutes, never getting past the point where it was estimating how much time was left, and then failed silently. So I tried doing an incremental backup. The initial backup went alright, but subsequent backups failed due to space problems. This doesn't make sense because the total amount of data being backed up on the drive was right around 1 TB, and only a few files had changed. I have tried reinstalling TIH and that has not made any difference.

This is maddening. I've been trying different things for the last three months and nothing has made a difference. I have been using Synctoy to manually backup everything to a spare drive, but I bought this so that I wouldn't have to do this.

What steps are suggested at this point?