Hello Yusuf Abaguben,
Thank you for posting in Microsoft Community forum.
Based on the description above, do you mean you want to back up the domain controller in the domain\forest? If so, you can back up a full server of the domain controller or back up the system status of the domain controller.
Before you back up a full server of the domain controller or back up the system status of the domain controller, you should install the built-in Windows backup role on Domain Controller.
Back up steps :
- Install Windows Server Backup (open Server Manager-> Add roles and features->Features -> Windows Server Backup)
- Start->Server Manager->tools-> Windows Server Backup->Local Backup->Action->Backup once
- Back up options: Scheduled backup options or Different options
- Select backup configuration: Full server (recommended) or Custom
- Select items to back up: System state
- Specify destination type: Local drive or remote shared folder
- On the confirmation screen, click Backup.
AD Forest Recovery - Backing up a full server | Microsoft Learn
Considerations for Active Directory Domain Services Backup - Win32 apps | Microsoft Learn
Backing Up and Restoring an Active Directory Server - Win32 apps | Microsoft Learn
I hope the information above is helpful.
If you have any question or concern, please feel free to let us know.
Best Regards,
Daisy Zhou