Search for duplicate records by storage based on their identifier.

The same can be performed by a CLI command:

cd {sitePath};
./typo3/cli_dispatch.phpsh extbase duplicateRecords:analyse

Tip! You can also configure a Scheduler Task which will send a report by email to if anything looks wrong. {namespace v=Fab\Vidi\ViewHelpers} {namespace m=Fab\Media\ViewHelpers}