Dark data is the info companies store but rarely use—about 55% of all data sits...

https://angelossplendidperspectives.lowescouponn.com/how-do-i-estimate-the-cost-of-dark-data-storage

Dark data is the info companies store but rarely use—about 55% of all data sits idle. It’s a hidden cost that can swallow $2.5 million annually in waste and slow down AI projects by adding unnecessary noise