I know this on a very small minor scale . . . . I manually backup my music directory every two weeks from my PC to two different backup disks. I discovered a problem on my PC hard drive which I soon learned was also on my backups. The solution, of course, is to create different backups, by date, and keep a whole series of these -- but not only does this take a LOT of disk space, it is not a trivial task to go back far enough to find a "clean" backup without losing a ton of music acquired since then. A trade-off. Magnify this my thousands and you have Dish's current dilemma.Backups are worthless if you don't know when they got in, restoring could just put back in the holes back in place.