Two Migration Scenarios
Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2, Windows Server Update Services
There are two basic SUS-to-WSUS migration scenarios:.
Installing WSUS on the SUS computer and migrating content and approvals
Installing WSUS on a different computer and migrating content and approvals
Depending on your current SUS infrastructure and goals for WSUS, you might need to use both of these scenarios. For example, if you have two SUS servers and want to install WSUS on one and then consolidate the other, you would have to use steps from both migration procedures to achieve your goal. These processes are shown in the "Comparison of SUS to WSUS Migration Scenarios" illustration.