Like you, I have several large hard drives which are used to archive my combat media and as such, was seeking to purchase yet another due to running low on space. Then I read about a method to obtain extra space by finding duplicates on each of the hard drives so I had to give it a try. To my amazement, the software discovered that I had over 383gig of duplicate files spread over my archive drives which I quickly removed. I now have all this extra space to store more media and as such, saves me from buying another drive for a while longer.
Download the software here:
https://www.digitalvolcano.co.ukInstructions:
1 ) Install the software package
2 ) Connect all your hard drives
3 ) Run the software up
4 ) Wait for it to locate duplicates
5 ) Click clean files and you're done
It's that easy :-)
Enjoy!