Administration:
To enable or disable this functionality, we have not done the user interface for now (as of Datafari 1.2). You need to open the datafari.properties file, which is available in the folder \[Datafari_install_Folder]\bin .
In this file, set the parameter to DEDUPLICATION_IS_ENABLED=true or false depending on your needs. By default, it is set to true as it is resource consuming. Note that you need to restart Datafari in order for the change to be taken into account.
If you need more technical information, please refer to Deduplication : Technical note