Deciding Whether to Perform an Upgrade or a Clean Installation

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Unlike other automated installation methods, such as image-based and RIS installations, an unattended installation can be configured to perform a clean installation or an upgrade of an existing operating system. To determine which installation method is more appropriate, you need to evaluate possible upgrade paths, and then evaluate the advantages and disadvantages of upgrades and clean installations. If you determine that upgrading is appropriate, you then identify upgrade issues that you need to address during the planning and design phase of an unattended installation. Figure 2.3 shows the steps you need to follow to determine whether to perform an upgrade or a clean installation.

Figure 2.3   Determining Whether to Perform an Upgrade or a Clean Installation