Dark data is all the info a company collects but never uses—think emails, logs,...
https://wiki-zine.win/index.php/How_Does_Apache_Iceberg_Fit_into_File_and_Object_Metadata_Tables%3F
Dark data is all the info a company collects but never uses—think emails, logs, or old documents. It can be as much as 60-80% of stored data. Ignoring this stuff wastes time and money—some firms lose up to $2.5 million a year on storage and management