Bạn có thể thiết lập một mối quan hệ nâng cấp giữa các ứng dụng được triển khai trong cùng một GPO bằng cách chọn đối tượng Group Policy hiện hành. Nếu bạn muốn thiết lập một mối quan hệ giữa một gói trong một GPO khác nhau | Chapter 9 Deploying and Maintaining Software Through Group Policy 343 Figure 9-10 Adding a package to upgrade 5. You can establish an upgrade relationship between applications that are deployed within the same GPO by selecting Current Group Policy Object. If you want to establish a relationship between a package in a different GPO select A Specific GPO click Browse and then use the Browse For A Group Policy Object dialog box to select the GPO. 6. Under Package To Upgrade select the package to upgrade. You can then choose an upgrade option Uninstall The Existing Package Then Install The Upgrade Package Recommended if you want to completely reinstall the application with the new version Package Can Upgrade Over The Existing Package Recommended if you want to perform an in-place upgrade over the existing installation. 7. Click OK to close the Add Upgrade Package dialog box. 8. If you want to make this a required upgrade select Required Upgrade For Existing Packages. The application you re deploying will automatically upgrade any existing packages the next time the computer restarts or when a user logs on. The user won t have a choice in the matter. If you do not make this a required upgrade the user can choose when to install the upgrade through Add Or Remove Programs or by activating the application. After you create an upgrade relationship the package doing the upgrading will have an icon depicting a green up arrow to indicate that it is an upgrade. 344 Part II Group Policy Implementation and Scenarios Note If you deploy two applications and one upgrades the other new clients that come on the network and don t have either application installed will first install the earlier version of the application and then during the next foreground processing cycle install the upgraded version. Customizing the Installation Package with Transforms When an application uses a Windows Installer package you can customize the installation using transforms. Transforms are special .
