We have raw data on our S3 uploaded with the terminal functions as stated on the AWS's site. And we are looking for a software that can see what's already stored in the S3, use that as a baseline, and do backups of the changes moving forward. As it's nearly 90TB, and it will take an enourmous amount of time to send it up AGAIN..

It was a copy with the raw data through the Snowball using their system, So might need to do a "upload" with your product so it can map out everything, then start the backup procedure?