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This article will explain in detail about the migration of domain controllers and its example analysis. The content of the article is of high quality. Therefore, Xiaobian shares it with you as a reference. I hope that after reading this article, you will have a certain understanding of relevant knowledge.

Specific steps for domain controller migration:

1. Evaluate the existing environment and list the documents that need to be moved out

2. Backup the primary domain controller, including the system state. It is a good habit for administrators to backup before making system and architecture changes.

3. Install a brand-new server, enter the architecture as an additional domain controller, and run it for a while, waiting for the synchronization of the two DCs to complete.

4. Copy the files that need to be moved out to the new server

5. Use the Dcpromo command to demote the primary domain controller. If the demote succeeds, the FSMO role will automatically migrate to the additional domain controller, and the additional domain controller will automatically be promoted to the primary domain controller. If the demote fails, you need to

To manually delete the demoted DC from the Active Directory directory database and manually migrate the FSMO role to an additional domain controller

6. Modify relevant configurations and permissions so that users can access files in new locations

Domain Controller Migration Instance

At present, there are two windows 2003, one connected to the local area network (A), installed as the main domain controller, one not connected to (B), want to replace A with B, I did not find technical information today to install B and A the same main domain controller (later found that B can be added to A and then upgrade the method can be, now very depressed), ask how can I now A all user groups and users migrated to B?

Assume that the domain of the local area network is test.com

1. Remove the installed domain controller from machine B dcpromo first. This operation will not affect the domain controller of test.com on machine A.

2. Restart machine B and then run dcpromo on machine B to install AD, and install the additional domain controller for the domain test.com of the current local area network. When installing DNS, you must enter test.com when entering the DNS domain name, and the NetBIOS name is test.

Then install DHCP service.

3. Transfer five FSMO roles on B machine respectively.

4. Set the B machine to GC (Global Catalog).

5. After completing the above steps, you should be able to see all user and computer accounts in AD on B machine, because automatic self-control will be realized between main domain control and additional domain control. But pay attention to the computer A record in DNS

Whether there is replication and DNS structure is complete, such as two domain-controlled A records and SRV records, etc. If it has not been copied, it may have to wait, otherwise after 5 steps, the following workstations will be because

DNS does not have the name of the workstation and the corresponding IP can not be name resolution and thus can not achieve login, if you still do not see the DNS MMC management console on the B machine has any workstation A records, then you have to see if there is

Is replication enabled or DNS setup correct?

Run dcpromo on machine A to demote machine A to a member server, then machine A becomes a computer in the domain, not a domain controller.

This kind of situation is easier to do, if encounter A machine down on the more troublesome, then have to carry out the role of the grab (Seize).

About domain controller migration and its instance analysis shared here, I hope the above content can be of some help to everyone, you can learn more knowledge. If you think the article is good, you can share it so that more people can see it.

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