New report for groups not used for File-Server permission

What is a one sentence summary of your feature request?

Add a report that lists AD groups not used in File-Server permissions

Please describe your idea in detail. What is your problem, why do you feel this idea is the best solution, etc.

Companies are looking for groups which are not used anymore in order to clean up the AD. There is no way actually to locate groups in AD that are not used for permission on file servers.

How do you currently solve the challenges you have by not having this feature?

For each group in AD I have to run the report “Folder Permission”