Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2006-12-06

If you are deploying a large Microsoft Exchange Server 2007 organization, you can use this topic to guide you through the planning and deployment information you will need to deploy Exchange. This topic includes links to the relevant information for a typical large Exchange organization.

For information about deploying a simple Exchange organization, see Deploying a Simple Exchange Organization.

For information about deploying a standard Exchange organization, see Deploying a Standard Exchange Organization.

For information about deploying a complex Exchange organization, see Deploying a Complex Exchange Organization.

Of the four defined organization models for Exchange 2007, the large Exchange organization is the largest organization model that can be deployed in a single Active Directory directory service forest environment. The distinguishing characteristics of the large Exchange organization include:

• Five or more routing groups, or five or more Active Directory sites that have at least one Exchange server deployed. Multiple locations and Active Directory sites introduce the multi-site routing protocol and role discovery algorithms, as well as a requirement to use IP site links.
  
  

  Note:
  Multiple routing groups will exist only in a large Exchange organization that includes Exchange 2007 and either Exchange Server 2003 or Exchange 2000 Server, or both Exchange 2003 and Exchange 2000. In a pure Exchange 2007 environment, all servers belong to a single routing group.

• A single Active Directory forest. The introduction of a second or subsequent forest, or the introduction of directory synchronization tools, such as Microsoft Identity Integration Server (MIIS), automatically redefines the topology as a complex Exchange organization. For more information about complex Exchange organizations, see Planning for a Complex Exchange Organization.
  
  
• The Service Delivery Location (SDL) and Client Service Location (CSL) reside in multiple physical locations, and there is often greater separation between them than in the standard Exchange organization.
  
  
• Although in this topology, the Exchange organization includes multiple points of presence, the external messaging and client protocol-specific namespaces are common across most or all locations.
  
  

For a detailed description of the large Exchange organization, see Planning for a Large Exchange Organization.

What's New

Planning

Deployment

To ensure that you are reading the most up-to-date information and to find additional Exchange Server 2007 documentation, visit the Exchange Server TechCenter.

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