After the Windows Server 2016 primary domain controller is built, continue with the secondary domain controller setup.
1. Change the IP address of the server
2. Modify the name of the server
3. Open Server Manager, select Add Roles and Features
4. Select, Next
5. Select, Next
6. Select, Next
7. Tick "Active Directory Domain Services"
8. Select, add Features
9. Select, Next
10. Select, Next
11. Select, Next
12. Select, install
13. Select "Promote this server to a domain controller"
14. Select "Add domain controller to existing domain" and select "Select"
15. Enter the domain Administrator account & password
16. Select, determine
17. Select, Next
18. Enter the directory Restore Mode password, next
19. Select, Next
20. Select, copy the source server, next
21. Select, Next
22. Select, Next
23. Select, install
Wait for the installation to complete, restart the server, and the secondary domain controller deployment is complete.
Windows Server 2016 Secondary domain controller build (ii)