Edited due to finding more details: See 2nd post for question / help needed. Thank you.
I've used my own work around for auditing my files and folders (RoboCopy in "list" mode compared to backup offline external hard drive). I'm fairly confident I have not lost any important files or gained any junk files in my ShareFolders.
So before the error I only had Unduplicated and Duplicated Files on the 4 hard drives in Pool. Now I have all sorts of "Other" data that I can't find/identify on the disks.
Can you help me get those drives back to having no "other" and no "unusable for duplication" space?