Dark data is all the information companies collect but never use—think 60-80%...

https://rapid-wiki.win/index.php/Is_$300,000_a_Year_Realistic_for_300TB_Plus_3.5PB_of_Cloud_Storage%3F

Dark data is all the information companies collect but never use—think 60-80% of stored data sitting idle. It matters because this forgotten data takes up space, drives up costs, and can hide risks. For example, businesses waste around $2