In this guide, I am going to explore how To Create and Additional Domain Controller (ADC) in Microsoft Windows Server 2012
Additional Domain Controller (ADC) Server 2012
1- open server manager, under configure this local server select Add roles and features.
![server manager dashboard](https://xpertstec.com/wp-content/uploads/2019/09/windows-server-2012-dashboard-1.jpg)
2- Add roles and features wizard, click next.
![add roles and features wizard](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-add-role-and-feature-wizard-1.jpg)
3- Select the Role-based or feature-based installation and click on next.
![add role based and feature based](https://xpertstec.com/wp-content/uploads/2019/09/add-role-based-or-feature-based-2.jpg)
4- Select a server from the server pole and click next.
![server 2012 server selections](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-server-selection-2.jpg)
5- Select box Active Directory Domain Services.
![server 2012 roles active directory domain services](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-role-active-directory-domain-services-2.jpg)
6- Click Add Features that are required for the Active Directory Domain Services.
![server 2012 add required features active directory domain](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-add-features-2.jpg)
7- After adding active directory domain services features, click next.
![server 2012 roles active directory domain services](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-active-directory-server-role-2.jpg)
8- Click next.
![server 2012 active directory domain features](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-active-directory-features-2.jpg)
9- Click next.
![server 2012 wizard ad ds](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-wizard-ad-ds-1.jpg)
10- Click Install to start the active directory domain services installation.
![server 2012 confirm installation](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-confirm-installation-2.jpg)
11- After completed installation, then click on close.
![server 2012 installation selections](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-installation-selections-4.jpg)
Server 2012 additional domain controller configuration
12- Server Manager click warning message and select Promote this server to a domain controller.
![server 2012 promote this server](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-promote-this-server-1.jpg)
13- Select Add a domain controller to an existing domain, then click the select button and browse to your local domain controller (xpertstec.local), verify that credentials are Administrator and then click on next.
![server 2012 deployment configuration](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-deployment-configuration-1.jpg)
14- Verify that Domain Name System (DNS) server and Global Catalog (GC) is selected and type the directory services restore mode DSRM Password and click next.
![server 2012 domain controller options](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-domain-controller-options-1.jpg)
15- Ignore the DNS Options warning, so click on next.
![server 2012 dns options](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-dns-options-1.jpg)
16- Specify Additional replication Options interface, besides the Replicate from Select DC2003.xpertstec.local and then click on next.
![server 2012 additional options](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-additional-options-1.jpg)
17- Specify the location of the AD DS database, log files, SYSVOL and then click on next.
![server 2012 ad ds database](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-ad-ds-database-1.jpg)
18- Under Preparation Options, then click on next.
![server 2012 preparation options](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-preparation-options.jpg)
19- Review that configures this server as an additional active directory domain controller for this domain (your domain), verify all the information and then click on next.
![server 2012 review options](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-review-options-1.jpg)
20- On the Prerequisites Check to verify that All prerequisites checks passed successfully, so click Install.
![server 2012 prerequisites](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-prerequisite-check-2.jpg)
21- Please wait for few minutes for the process to complete.
![upgrading ad active directory domain](https://xpertstec.com/wp-content/uploads/2019/09/upgrading-an-active-directory-domain.jpg)
22- After restarting windows Server 2012, so log in as Domain Administrator.
![server 2012 domain admin login](https://xpertstec.com/wp-content/uploads/2019/09/server-2012-domain-admin-login.jpg)
For more information click here