It seems nobody wants to distribute such a program. I've only found two references through Google, and they created the app in-house to do testing. These companies make a living testing and certifying, and one was co-authored with Executive Software, makers of DiskKeeper. Not one offered up the utility, and I spent hours searching. I've looked for the same thing to test the diferent defrag apps on my systems, and never came up with anything. I never got around to testing them.
Try this - set up a system with 3 or 4 drives, all mirrored (RAID 1). Install Windows 2000 or XP. Place it on a broadband connection. Do not install WP SP2. Download some patches, but not all. Increase your cache to 10GB Surf the net so that every spyware program installs itself. Load MS Office, get a virus. Clear the cache, download a movie and some MP3s. Surf some more, install useless Gator apps, reinstall office. Download another move and more apps. Then after a week of heavy use, run spybot to rid some spyware, empty cache, download another movie and some jpegs, and install antivirus. Clear the cache, and use for another week or two, constatly adding and erasing large and small files. You should have 3-4 nicely fragmented drives in no time. Break the mirror and test each drive separately. I never tried this myself, but it could work. If I had the extra drives I probably would try this myself.
Jarrett