Dark data is the information companies collect but never use, often making up...

https://www.tool-bookmarks.win/dark-data-is-all-the-information-your-company-collects-but-never-uses-think-old

Dark data is the information companies collect but never use, often making up 60-80% of their stored data. This hidden, inactive data can quietly drain storage resources and cost businesses up to $2.5 million a year