how do you make drobo see a bad drive as good

How do you wipe a drive that Drobo reports as bad so that you can re-use it in drobo? I have had a new drive go bad but have run tests on it as advised by the drive manufacturer and all appears well, so what I want to do is to wipe it so drobo see’s it as good. I have tried to reformat it already in a bare drive case but when inserted back in drobo it immediately says it is bad.

Please help

welcome to the club.
There is already another topic related to this feature request. As far as I am aware that isn’t possible at the moment, because it seems to be that this information is stored somewhere in the drobo itself.
But you could support us in the corresponding topic