well, thanks anyway. I've actually been using Diskeeper for...well, as long as I can remember. I apologize for my tone in the original post, I had just spent the last fifteen minutes or so trying to find any reference to the question I had. I'm the sort of person who prefers figuring things out on my own rather than ask for help, so I was just a bit frustrated
My PC uses two (non-arrayed) 500GB disks, which I prefer to defragment manually. as each disk serves a specific purpose, it is much easier for me to defragment one while I am primarily using the other. I typically kick off a defrag, then go work on something else while it runs. when I check on it periodically, I generally find it much easier to quickly approximate the progress from a graphical map, hence my reason for asking. I guess I didn't think my drives were large enough to disable it...