Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2007-08-28

Microsoft Exchange Server 2007 introduces role-based deployment. This kind of deployment lets you deploy specific server roles that provide the messaging functionality you want for your organization. A server role is a unit that logically groups the required features and components that are required to perform a specific function in your messaging environment.

Exchange 2007 provides the following five distinct server roles that align to how messaging systems are typically deployed and distributed:

When deciding which server roles you want to deploy in your organization, consider the following:

Four server roles on one server

Each server role on separate computer

clustered mailbox server role

Before You Deploy

Before you deploy Exchange 2007, make sure that you have completed the necessary pre-installation tasks, including confirming that your organization and servers meet the minimum requirements.

For information about pre-installation tasks, including Exchange 2007 system requirements, see Preparing to Deploy Exchange 2007.

Installing Exchange Server 2007

You can install Exchange 2007 server roles on a computer in two ways:

If you are installing Exchange 2007 in an existing Exchange Server 2003 or Exchange 2000 Server organization, when you install the first Hub Transport server role, you must perform the procedure in the topic How to Install Exchange 2007 in an Existing Exchange Server 2003 Organization. If you do not perform that procedure, mail flow between the different versions of Exchange Server will not be established.

After You Deploy

After you deploy Exchange 2007, you should complete the post-installation tasks. For information about post-installation tasks, see Post-Installation Tasks.

If you already have one or more server roles installed on a computer, you cannot use the Exchange Server 2007 Setup wizard to add or remove server roles. Instead, you must use the command, or use Add or Remove Programs from the Control Panel. For more information about how to modify an Exchange installation, see How to Modify an Exchange Installation.

For More Information

Figure 3   Each server role on a dedicated computer with clustered Mailbox servers
Figure 2   Each server role on a dedicated computer
Figure 1   Multiple server roles that coexist on a single computer