Datasheet

8 CHAPTER 1 INTRODUCING EXCHANGE SERVER 2010
Applying Special Hotfixes
If you get a rollup fix such as Exchange 2010 rollup fix 4 and then later you require an individ-
ual hotfix from Microsoft to address a specific issue, you may need to uninstall the post–rollup
4 hotfix prior to installing rollup fix 5. If you ever get a hotfix for Exchange 2010 to address a
specific issue, always ask the Microsoft product support person if you will have to uninstall it
prior to applying the next rollup.
Server Roles
In earlier versions of Exchange, once the Windows server was prepared to support Exchange,
you simply installed an Exchange server. Then you customized the Exchange configuration,
configured Internet Information Server (IIS), disabled unnecessary services, and prepared
the server to assume the role you wanted it to assume, such as a Mailbox server, a bridgehead
server, an Outlook Web Access front-end server, and so on.
Exchange 2007 officially introduced the concept of server roles at the point of setup; this
continues with Exchange Server 2010. During the installation process, the Setup program
(Figure 1.2) asks the installer which roles the server will be performing.
Figure 1.2
Specifying server roles
When running Setup, if you choose a custom installation, during setup you can specify the
server roles by choosing from among the options in Table 1.1.
Once a role is selected, only the components necessary for that role are installed. This
reduces the overhead on machines that are dedicated to a particular task (such as a Hub
Transport server); ensures that no unnecessary executables, DLLs, or services are installed;