In this blog, I will explain how to install an Additional Domain Controller (ADC) in Windows server 2019. An additional domain controller is a backup domain
1- Click the Windows start button and choose the server manager.
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Install Additional Domain Controller
2- Windows Server Manager, Dashboard, Under configure this local server and select Add roles and features.
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3- Add roles and features wizard so, click on next.
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4- Installation Type so, select Role based or feature-based installation and then click on next.
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5- Select a server from the server pole and then click on ext.
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6- Select the Active Directory Domain Services box.
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7- Select Add Features that are required for the Active Directory Domain Services.
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8- After selecting the active directory features so, click next.
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9- Active directory add roles and features wizard and click on next button.
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10- Now click Next.
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11- So, click the Install button to start out the active directory installation.
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12- After active directory installation and click on Close.
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Promote Domain Controller
13- In Server Manager click warning message and then click on Promote this server to a website controller.
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14- Select the deployment operation (Add a DC to an existing domain). then click the select button and browse to xpertstec.local, verify that credentials are Administrator and then click on next.
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15- If you get this message Verification of replica failed so, please cancel the setup and then follow the below steps.
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Update you’ll verify if the system uses the FRS using follow below steps
SYSVOL migration from FRS to DFSR Click Here
16- Return again open Server Manager click warning message and then click on Promote this server to a DC.
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17- Deployment Configuration option So, Select Add a domain controller to an existing DC, and then click the select button and browse to xpertstec.local, verify that credentials are Administrator and then click on next.
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18- Verify that the name System (DNS) server and Global Catalog (GC) are selected and sort the directory services restore mode DSRM Password and then click on next.
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19- Ignore the DNS options warning and then click on next.
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20- Specify Additional replication Options interface, besides the Replicate from Select Server2008.xpertstec.local and then click on next.
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21- Specify the situation of the AD DS database, log files, and SYSVOL folders and then click on next.
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22- Active directory 2019 preparation options and then click Next.
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23- Review the choices interface so, verify all the knowledge and then click on next.
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24- On the prerequisites check to verify that each one prerequisites checks passed successfully and then click on Install.
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25- Now please awaits jiffy for the method to finish and then click on Close.
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26- After restarting windows Server 2019 operating system and then log in as Domain Administrator.
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27- Then log in to your DC, open active directory users and computers, expand your domain.local (xpertstec.local) and then choose DC and here you’ll find the extra DC.
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