How to Create Multiple Domain in Windows Server 2012: Step-by-Step Guide

Are you struggling to create multiple domains in Windows Server 2012? Look no further! In this step-by-step guide, we’ll take you through the process of creating multiple domains with ease. Whether you’re a beginner or an experienced Windows Server user, this guide will provide you with the knowledge and skills needed to create multiple domains in Windows Server 201

Before diving into the details of creating multiple domains, it’s important to have a solid understanding of Active Directory and DNS. Active Directory is a crucial component of Windows Server that manages users and computers, while DNS is responsible for translating domain names into IP addresses. Having a clear understanding of these concepts will make the process of creating multiple domains much simpler.

In this guide, we’ll walk you through the process of configuring DNS, creating and managing multiple domains, and much more. By the end of this article, you’ll have the knowledge and confidence to create multiple domains in Windows Server 2012 like a pro! So, let’s get started.

If you want to learn how to create multiple domains in Windows Server 2012, keep reading! We’ve got you covered with a step-by-step guide that will take you through the entire process. By the end of this article, you’ll be able to create multiple domains with ease and confidence.


Do you want to create multiple domains in Windows Server 2012? Active Directory, DNS, and Domain Controller are the essential components required for configuring and managing multiple domains.

Active Directory is a Microsoft directory service that provides a centralized location for network administration and security. It stores information about users, computers, and other network resources, and it helps to manage network resources efficiently.

DNS, or Domain Name System, is a hierarchical naming system that translates domain names into IP addresses. It allows users to access resources on the network using user-friendly names instead of numerical IP addresses.

Domain Controller is a server that manages network security and access to resources. It authenticates users and computers, and it enforces security policies for the domain. It is essential for managing multiple domains in a network.

In this step-by-step guide, we will show you how to create multiple domains in Windows Server 2012 by configuring the Active Directory, DNS, and Domain Controller. By following these steps, you will be able to manage multiple domains efficiently and securely. Let’s get started!

The Importance of Multiple Domains

Creating multiple domains in Windows Server 2012 is an essential task for businesses that require different network policies, access controls, and management of resources. With multiple domains, businesses can better organize their network infrastructure and manage their resources more efficiently. Multiple domains can also provide more flexibility for administering user and computer accounts, as well as managing resources and permissions.

Another important reason for creating multiple domains is to increase security. By separating different parts of the network into their own domains, it’s easier to isolate problems and prevent issues from affecting the entire network. Additionally, by having multiple domains, businesses can better manage their security policies and ensure that each domain adheres to the appropriate security protocols.

Overall, the importance of multiple domains in Windows Server 2012 cannot be overstated. Whether for organizational or security reasons, creating multiple domains is a crucial task for any business that wants to efficiently manage their network resources.

  1. Improved organization: Multiple domains allow for better organization of network infrastructure and resources.
  2. Enhanced security: By separating different parts of the network into their own domains, businesses can improve their network security and isolate problems.
  3. Greater flexibility: Multiple domains provide more flexibility for administering user and computer accounts, as well as managing resources and permissions.
  4. Easier management: With multiple domains, businesses can more easily manage their network resources and ensure that each domain adheres to the appropriate security protocols.

Creating multiple domains may seem like a daunting task, but with the right tools and knowledge, it can be done quickly and easily. In the following sections, we’ll walk you through the process of configuring DNS and creating multiple domains in Windows Server 2012 step-by-step.

Prerequisites for Creating Multiple Domains

To create multiple domains in Windows Server 2012, you need to have a basic understanding of Active Directory, DNS, and domain controllers. Here are the prerequisites you need to fulfill:

  • Server hardware: Ensure that your server meets the hardware requirements for Windows Server 2012.
  • Network connectivity: Ensure that your server is connected to the network.
  • Active Directory: Configure Active Directory Domain Services (AD DS) and domain controllers.
  • DNS: Configure the DNS server on the domain controller.

It is important to note that configuring multiple domains on a single server is not recommended for production environments. It is best to use separate servers for each domain to ensure redundancy and fault tolerance.

Before you begin the process of creating multiple domains, ensure that you have a backup of your server and all the data stored on it. This will prevent any data loss in case something goes wrong during the process.

Understanding Active Directory:

Active Directory is Microsoft’s directory service for managing network resources. It is the central location for all user and computer authentication, authorization, and access control.

Active Directory is composed of several components, including domain controllers, domains, and organizational units (OUs). Domain controllers are servers that authenticate users and computers and store information about them. Domains are containers that group resources, such as users and computers, and provide a single point of administration. OUs are used to organize resources within domains and delegate administrative control.

Active Directory also provides a hierarchical naming structure called the Domain Name System (DNS). DNS is used to resolve hostnames to IP addresses, and it is a critical component of Active Directory.

When a user logs on to a computer, Active Directory authenticates the user’s credentials and applies group policies to enforce security settings and other configurations. Group policies are sets of rules that specify what users can and cannot do on a computer or network.

Overall, understanding Active Directory is essential for creating and managing multiple domains in Windows Server 201

What is Active Directory?

Active Directory (AD) is a directory service that Microsoft developed for Windows domain networks. It authenticates and authorizes all users and computers in a Windows domain network, assigning and enforcing security policies for all devices and applications.

AD also provides a hierarchical structure for organizing objects in the network, such as users, computers, and printers. This allows administrators to manage network resources more efficiently and provides a more user-friendly experience for end-users, who can easily locate and access network resources through a single sign-on process.

The primary function of AD is to manage identities and resources across the network, making it easier to secure and manage the entire network. It also helps organizations comply with security and regulatory requirements, such as HIPAA or Sarbanes-Oxley.

Configuring the DNS:

Before creating multiple domains, you need to configure the DNS (Domain Name System) on your Windows Server 201The DNS translates domain names into IP addresses, making it easier for users to access the correct website or server.

Here are the steps to configure DNS:

  1. Step 1: Open the Server Manager and select the “DNS” option from the “Tools” menu.
  2. Step 2: Right-click on the server name and select “Configure a DNS Server”.
  3. Step 3: Choose the “Create a forward lookup zone” option and follow the prompts to create a new DNS zone.
  4. Step 4: Add “A” records for each server that will be associated with the new DNS zone.

Once the DNS is properly configured, you can move on to creating multiple domains.

Setting up DNS Forwarders

DNS Forwarders are used to forward DNS queries to external DNS servers outside of your network. This is important when your DNS server does not have a record for a particular domain, and needs to resolve the query by reaching out to other DNS servers.

To configure DNS forwarders, open the DNS Manager console, right-click on the server name, and select Properties. In the Server Properties dialog box, select the Forwarders tab, and then click Edit to add the IP addresses of external DNS servers.

It’s a good idea to add multiple DNS forwarders to ensure redundancy and avoid a single point of failure. You can add up to three DNS servers as forwarders.

Creating DNS Delegation

DNS delegation is the process of assigning authority for a portion of a domain to a different DNS server. This is useful when you want to divide up administrative responsibility for different parts of a domain. To create a DNS delegation in Windows Server 2012, you need to follow these steps:

  1. Open the DNS Manager console
  2. Expand the server name and then expand the Forward Lookup Zones folder
  3. Right-click the parent domain and select “New Delegation”
  4. Follow the wizard to specify the delegation name and the IP address of the delegated DNS server

Once the delegation is created, the delegated server will have authority over the specified domain or subdomain, and you can configure it as needed.

Configuring DNS Zones

DNS zone is a portion of the domain name system (DNS) namespace that is managed by a specific organization or administrator. A zone contains information about a portion of the domain namespace, which is required to translate domain names into IP addresses.

Forward lookup zone maps domain names to IP addresses, while reverse lookup zone maps IP addresses to domain names. In Windows Server, a DNS zone can be configured as either a primary zone, a secondary zone, or an Active Directory-integrated zone.

To create a new DNS zone, you can use the DNS Manager snap-in in Windows Server. You need to provide a zone name and select the zone type, then specify the zone file location and configure the zone options. You can also configure zone transfer settings to allow secondary DNS servers to get zone information from the primary DNS server.

Creating Multiple Domains:

Multiple domains allow organizations to create separate areas of control, with their own policies and administrators. By creating multiple domains, it is possible to delegate administration to different groups, and also to separate services, such as email or web hosting, into their own domain.

One way to create multiple domains is to use subdomains. For example, if an organization has a main domain called “”, it could create subdomains called “” or “”. These subdomains would still be part of the same parent domain, but they could have their own policies and administrators.

Another way to create multiple domains is to use separate domain trees. This would involve creating a new domain tree with its own root domain, which is separate from the existing domain tree. The new domain tree would have its own domain controllers, policies, and administrators.

Creating a New Domain

Domain creation involves adding a new domain to the existing Active Directory forest. It provides a means to segregate resources and implement separate security policies for different parts of the organization. Domain creation is a straightforward process, but it requires careful planning to ensure that the new domain operates smoothly.

Before creating a new domain, it is essential to evaluate the impact on the existing infrastructure and ensure that it meets the organization’s needs. The process involves setting up a new domain controller, configuring DNS, and transferring the necessary data from the existing domain.

Best practices for domain creation include choosing a domain name that reflects the organization’s structure and hierarchy, implementing a naming convention for domain controllers, and configuring trust relationships between domains to facilitate resource sharing.

Creating a Child Domain

A child domain is a sub-domain that is created under an existing domain. It inherits the properties and policies of its parent domain but can have its own specific settings.

To create a child domain, you must first have an existing domain with a domain controller. Once you have that, follow these steps:

  • Step 1: Open the Active Directory Domains and Trusts console on the domain controller.
  • Step 2: Right-click on the parent domain and select “New Domain”.
  • Step 3: Follow the prompts in the wizard to create the new child domain.
  • Step 4: Once the child domain is created, you can assign a domain controller and configure any specific settings as needed.

Creating a child domain can be useful for large organizations that want to segment their network into smaller, more manageable units. It also allows for more granular control over permissions and settings within each domain.

Creating a Tree Root Domain

Creating a tree root domain involves establishing a new domain tree in the forest, and then creating a new domain within that tree. This approach allows for greater organization of resources within a large network, and can improve security and management efficiency.

To create a tree root domain, start by creating a new domain tree. This can be done by promoting a member server to a domain controller and selecting the “New tree in forest” option during the configuration process. Once the new tree is established, a new domain can be created within it by promoting another member server to a domain controller and selecting the “New domain in tree” option.

It’s important to plan the structure of the new domain tree carefully to ensure that it aligns with the organization’s needs and goals. This includes deciding on the appropriate domain name and choosing the appropriate level of domain functional level to support the required features and capabilities.

Managing Multiple Domains:

Domain Trusts: Managing multiple domains often involves establishing trust relationships between them to allow resources to be shared across domains. Trusts can be established between domains in the same forest or across different forests, and can be either one-way or two-way. Trusts are managed using the Active Directory Domains and Trusts snap-in.

Global Catalog Servers: A global catalog server is a domain controller that stores a full copy of all objects in the forest. By default, only one domain controller in each domain is designated as a global catalog server. However, it is recommended to have at least one global catalog server in each site to provide faster access to forest-wide information.

Managing Group Policy: Group Policy is used to manage user and computer settings in a domain. When multiple domains are involved, Group Policy can be linked at different levels, such as the domain level or the site level. Group Policy can also be filtered to apply only to specific users or computers in a domain, or to apply only during certain times of the day.

Managing DNS: When managing multiple domains, it is important to ensure that DNS is properly configured to allow name resolution across domains. This can involve setting up conditional forwarders, stub zones, or secondary zones to allow DNS queries to be forwarded to other domains or to provide redundancy for DNS data.

Managing Domain Trusts

Domain trusts are used to allow users from one domain to access resources in another domain. Trust relationships can be established between domains in the same forest or in different forests. Two-way trust relationships allow users in both domains to access resources in each other’s domain.

Managing domain trusts involves creating, modifying, and deleting trust relationships. The trust relationship can be managed using the Active Directory Domains and Trusts console. It allows the administrator to manage trust relationships between domains in the same forest, and also between domains in different forests.

Creating domain trusts involves selecting the type of trust, the domains involved in the trust, and the direction of the trust. Once the trust has been created, the administrator can configure the trust properties to control access between the domains.

Deleting domain trusts involves removing the trust relationship between the domains. This should be done with care as it can impact user access to resources. Before deleting a trust, it is important to ensure that all dependencies on the trust have been removed.

Managing Domain Controllers

Domain controllers are the backbone of any Active Directory environment. They are responsible for managing authentication and authorization of users and computers, and maintaining the directory database. It is important to properly manage domain controllers to ensure the stability and security of the environment.

Monitoring: Regular monitoring of domain controllers is essential to detect any issues and ensure they are resolved quickly. This includes monitoring event logs, system performance, and replication status.

Backup and Restore: Proper backup and restore procedures are crucial to ensure that domain controllers can be recovered in case of hardware or software failures. Regular backups should be taken and tested to ensure they are valid and can be restored when needed.

Security: Securing domain controllers is critical to protect the Active Directory environment from unauthorized access. This includes implementing strong passwords, restricting physical access, and using secure communications between domain controllers.

Capacity Planning: As the number of users and computers in the environment grows, the load on domain controllers increases. Proper capacity planning should be done to ensure that domain controllers have sufficient resources to handle the load and avoid performance issues.

Managing Group Policy Objects

Group Policy Objects (GPOs) are a powerful tool for managing user and computer settings across your domains. Here are some important considerations when managing GPOs:

Scope: When creating a new GPO, consider its scope carefully. A GPO can be linked to a domain, an organizational unit, or a site, and its settings will apply to all users and computers within that scope.

Security Filtering: Use security filtering to control which users and groups are affected by a GPO. This can be particularly useful for targeting specific groups or departments within your organization.

Versioning: GPOs have a version number that increments each time the GPO is modified. Use versioning to track changes and roll back to a previous version if necessary.

Deployment: Use the Group Policy Management Console to deploy GPOs to your domains. You can link GPOs to multiple scopes, enable or disable them as needed, and force a GPO refresh on specific computers or users.

Frequently Asked Questions

What is the process for creating multiple domains in Windows Server 2012?

To create multiple domains in Windows Server 2012, there are specific steps you need to follow. These include configuring DNS zones, creating a new domain, creating a child domain, or creating a tree root domain.

What are some advantages of creating multiple domains?

Creating multiple domains can provide a number of advantages, such as improved security, better organization, and easier management of resources and users.

What is a child domain?

A child domain is a domain that is created within an existing domain. It shares the same namespace as the parent domain but has its own policies, permissions, and administrative control.

What is a tree root domain?

A tree root domain is the top-level domain in a domain tree, which consists of a group of related domains that share a common naming structure and directory database. It provides the highest level of control over the domains in the tree.

What is domain trust?

Domain trust is a relationship between two domains that allows users from one domain to access resources in the other domain. Trusts can be one-way or two-way, and can be established between domains in the same forest or in different forests.

What is a Group Policy Object?

A Group Policy Object (GPO) is a collection of settings that defines how computers and users are configured in a Windows environment. GPOs can be used to enforce security policies, configure software settings, and control user behavior.

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