I bought ATI2011 for its Non-Stop Backup feature. It turns out the software is not smart enough to deal with external hard drives.
"Oh well", I thought, and created an hourly backup. At first, I went with the incremental backup, but when I had to restore a few files, it served an half-baked copy of my backups, so I've tried the standard backup, and it worked ok. Later, I've tried to move it to a networked drive, and suprise surprise! it crashed the program. Now I'm reinstalling it because it crashes at launch.
In the end, half the advertised features don't work, and the rest work poorly. Avoid this software.