I have a removable drive tray that lets me insert/remove SATA drives from my system. I would like to use those as a backup target instead of USB drives. However, the backup software refuses to back up to them because they are 'locally attached' and does not see them as removable. Why is there this limitation? It should not matter what I back up to as long as I'm not trying to backup to the same drive I am backing up. The ability to only backup to USB (or 'removable') drives is a severe limitation. Are there any plans to change this limitation?