2. Trong Công cụ hành chính, mở DNS Manager. 3. Nếu một hộp thoại UAC xuất hiện, chọn Continue. 4. Trong DNS Manager, mở rộng Forward Lookup Zones. Kích chuột phải vào và chọn New Host (A hoặc AAAA). 5. | 92 Chapter 2 Designing Active Directory Domain Services Figure 2-4 Single domain model Use the single domain model when fast network connections exist between domain controllers bandwidth consumption is not a concern the administration of AD DS is centralized and security requirements are consistent across the organization. Regional domain model The regional domain model consists of a forest root domain and one or more regional domains which represent the geographic locations within an organization. The regions used to define each domain in this model typically represent fixed elements such as countries. Wide area network WAN connectivity is a key factor when planning to use a regional domain model which is more complex to design and requires a thorough analysis of the WAN connectivity and number of users in each region. However because all object data within a domain is replicated to all domain controllers in that domain regional domains can reduce network traffic over the WAN link. This model is better suited when diverse security requirements administrative requirements or replication requirements exist across the organization. Figure 2-5 illustrates the regional domain model. Use the regional domain model when not all domain controllers are connected to the rest of the network through fast connections network traffic needs to be minimized the administration of AD DS is decentralized and security requirements are diverse across the organization. Lesson 1 Designing AD DS Forests and Domains 93 Users Servers Users Servers Users Servers Figure 2-5 Regional domain model MORE INFO Domain models For more information about domain models go to http windowsserver2008 en library . Determining the Number of Domains Required After you have selected a domain model determine the number of domains required which will vary .
