All disks and sticks I have tested with Open-E show as "incompatible". This is a big stopper in evaluating the software. While it is always possible to attach USB disk for the time of testing, it may be much more difficult to use some internal hard drive. As a rule, there is only one, with the main operating system on it. First, it cannot be wiped, second, explain me how to test RAID 6 with one drive.