Dark data is the information companies collect but never use or classify—often...

https://technivorz.com/how-do-i-connect-nas-and-object-stores-without-installing-agents/

Dark data is the information companies collect but never use or classify—often 55% of all stored data. This unused data not only racks up storage costs, sometimes wasting over $2.5 million annually, but also creates risks like security gaps