Dark data is the information your company collects but never uses—like old...

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

Dark data is the information your company collects but never uses—like old files hiding on servers. Around 55% of stored data is dark, which means you’re paying to keep it safe but getting no value