Dark data is all the info your company stores but never uses—think old files,...

https://golf-wiki.win/index.php/How_Do_I_Prepare_Unstructured_Data_for_RAG_Pipelines%3F

Dark data is all the info your company stores but never uses—think old files, backups, or logs. Up to 80% of your data can be inactive, which means you’re paying to keep it safe and cluttering systems