Microsoft Press transitioning your mcsa mcse to windows server 2008 2009 phần 4

Nó rất dễ dàng để nâng cao một mức chức năng. Thật khó có thể giảm một này đòi hỏi phải cài đặt lại hoặc khôi phục lại từ bản sao lưu của mức chức năng thấp hơn. Nếu, ví dụ, bạn tăng mức độ miền chức năng cho Windows Server 2008 và sau đó tìm thấy bạn cần phải thêm một bộ điều khiển miền Windows Server 2003 đến tên miền của bạn | NOTE DO NOT BE TOO HASTY IN RAISING DOMAIN AND FOREST FUNCTIONAL LEVELS. It is easy to raise a functional level. It is difficult to reduce one this requires a re-install or a restore from backups of the lower functional level. If for example you raised the domain functional level to Windows Server 2008 and then found you needed to add a Windows Server 2003 domain controller to your domain you have a serious problem. Similarly if you raised your organization s forest functional level to Windows Server 2008 and your organization acquired another that had a domain that included Windows Server 2003 domain controllers you would have problems integrating your network. Raise functional levels only enough to enable the features you need. MORE INFO DOMAIN AND FOREST FUNCTIONAL LEVELS For more information about domain and forest functional levels see http technet . en-us library . RODCs require a forest functional level of Windows Server 2003 or higher. To determine the functional level of your forest open Active Directory Domains And Trusts from the Administrative Tools group right-click the name of the forest choose Properties and verify the forest functional level as shown in Figure 5-12. Any user can verify the forest functional level in this way. FIGURE 5-12 The Forest Properties dialog box. Lesson 2 Configuring Read-Only Domain Controllers CHAPTER 5 263 If the forest functional level is not at least Windows Server 2003 examine the properties of each domain to identify any domains for which the domain functional level is not at least Windows Server 2003. If you find such a domain ensure that all domain controllers in the domain are running Windows Server 2003. Open Active Directory Domains And Trusts rightclick the domain and choose Raise Domain Functional Level. When you have raised each domain functional level to at least Windows Server 2003 right-click the root node of the Active Directory Domains And Trusts snap-in and choose Raise Forest .