If you performed a custom installation and did not install the Active Directory driver on the Identity Manager server, you have two options:
Install the files on the Identity Manager server.
Install the Remote Loader (required to run the driver on a non-Identity Manager server) and the driver files on a non-Identity Manager server where you want to run the driver. This is the method you should use if you do not want to install eDirectory and Identity Manager on the server that has Active Directory installed on it.
If you decide to use the Remote Loader and install it on a member server, you must configure the driver to use an SSL connection between the Remote Loader and the Identity Manager server.