Dark data is the info hidden away in your storage that no one’s using—think 60%...

https://wiki-byte.win/index.php/Do_I_Need_to_Move_Petabytes_to_the_Cloud_to_Get_Value_from_Dark_Data%3F

Dark data is the info hidden away in your storage that no one’s using—think 60% to 80% of inactive files just sitting there. It’s a real problem because it wastes space, drives up costs, and adds noise that messes with AI projects