Dark data is all the information companies collect but never use—think old...

https://bravo-wiki.win/index.php/How_Do_I_Find_Dark_Data_on_a_NAS_Without_Breaking_Anything%3F

Dark data is all the information companies collect but never use—think old files, logs, or emails sitting idle. Around 60-80% of data goes unused, yet it still costs money to store and manage