Dark data is all the stored information companies forget about or never use. In...

https://wiki-square.win/index.php/How_Do_I_Build_a_Business_Case_for_Dark_Data_Cleanup%3F

Dark data is all the stored information companies forget about or never use. In fact, 60 to 80% of data sits inactive, taking up space and costing money. This hidden stash can cause wasted storage expenses—sometimes over $2