As mentioned in #Lesson 1, a server is designed to provide network services andresources. Windows Server 2008 R2 has organized the most common services into server roles. Typically, you would install those roles using Server Manager. In addition, Windows Server 2008 R2 includes many features that are not directly part of a role or that are used to support or augment the functionality of one or more roles or enhance functionality of the entire server.
A server role is a set of software programs that, when installed and properly configured, enables a computer to perform a specific function for multiple users or computers within a network. Many of these roles were listed in Lesson 1.
Role services are software programs that provide the functionality of a role or service. When you install a role, you can choose which services the role provides for other users and computers in your enterprise. Some roles, such as DNS Server, have only a single function and do not have available role services. Other roles, such as Remote Desktop Services, have several role services
that can be installed, depending on the remote computing needs of your organization.
To add roles, open Server Manager, click Roles in the left pane, and click Add Roles. See
Figure 2-20. Roles can also be added using the Initial Configuration Tasks window. To remove a role, click the Remove Roles. To manage a specific role that has already been installed, you can scroll down to the service or click on the link in the Roles Summary. If there are any problems with the roles, you will see Red circles with an X or Red circles with exclamation points.
Figure 2-20 Managing Roles
Also mentioned in Lesson 1, features are software programs that are not directly part of a role. Instead, they can support or augment the server. Similar to installing and removing roles, you would install and remove features with Server Manager console or by using the Initial Configuration Tasks window. See Figure 2-21.
Figure 2-21 Managing Features