Microsoft Exchange Server 5.5: Planning, Design, and Implementation
By Tony Redmond

Chapter 3: Establishing the Infrastructure for Exchange

Chapter 3: Establishing the Infrastructure for Exchange
Introduction
Every computer system or application is built on a set of basic concepts that must be mastered before an implementation can be considered. This chapter is my attempt to explain what I believe are the most important concepts relating to an Exchange implementation. We'll look at Windows NT, the basic organization of the Exchange messaging infrastructure, how to connect servers together, and the impact of Exchange on a network.
More detailed discussions about some of the points raised in this chapter, such as how to select and deploy the different connectors to link sites and other messaging systems together, are described in detail in Chapter 7 .
Exchange and Outlook are packaged and sold as shrink-wrapped software that you can purchase at many retail computer outlets. Unwrapping the packaging and taking out the CDs is done in a blink of an eye, but it's unwise to continue to rush forward and run the SETUP utility to install the new server. Successful Exchange implementations require a lot of detailed up-front planning and system preparation, especially if you plan to operate a multi-server, multi-site, distributed organization. The process of planning begins by understanding how an Exchange environment is developed on top of Windows NT.
Organizations, Sites, and Servers
Anyone considering the implementation of a messaging infrastructure built around Exchange needs to understand what the terms "organizations", "sites", and "servers" mean within the context of the overall system.
Figure 3.1: Organization, sites, and servers
Copyright Tony Redmond 1998 under license agreement with Books24x7
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