Can anyone help me find more documentation about file clone? I understand some of the concepts and tested cloning files. I will need to write a script to be able to clone all the files in a directory structure.

We have a scenario where we would like to clone close to 10 TB data that consists of more than 100k directory and 16 million files. We will be suing the clone files to present the data to test environment. Are there any negative impact of using file clone on such huge number of files.