Can defraggler only do one disk at a time? If so, is there a technical reason why it can't do multiple at the same time?
this has popped its head up a few times over the years, here's one; https://forum.piriform.com/index.php?showtopic=40682&hl=%2Bmultiple+%2Bdefrag&do=findComment&comment=247317
it's not available (yet?), so there must be a reason they don't want their product being able to do such a thing.