Dark data is the info companies keep but never use—think old emails, documents,...

https://wiki-burner.win/index.php/How_Does_Intelligent_Tiering_Help_with_Dark_Data%3F

Dark data is the info companies keep but never use—think old emails, documents, or system logs gathering dust. It can be 60-80% of all stored data, silently costing businesses up to $2.5 million a year in extra storage and management