Farm administrators can view and manage all objects within a farm. Farm administrators can also create new sites and manage role memberships throughout the entire farm. In the Console, farm-level tasks can only be performed by farm administrators. For example, only a farm administrator can create a new site within the farm.
When the farm is first configured using the Configuration Wizard, the administrator that creates the farm is automatically assigned the Farm Administrator role. While configuring the farm, that administrator selects the option to use either Windows or Active Directory credentials for user authorization within the farm. After the Configuration Wizard is run, additional groups can be assigned the Farm Administrator role in the Console.
To assign additional Farm Administrators