Consolidating resource and account domains that are upgraded in place from a Windows environment as part of your Windows Server AD DS deployment may require interforest or intraforest domain restructuring.
Restructuring AD DS domains between forests helps you reduce the complexity of your organization and the associated administrative costs. Restructuring AD DS domains within a forest helps you to decrease the administrative overhead for your organization by reducing replication traffic, reducing the amount of user and group administration that is required, and simplifying the administration of Group Policy. Skip to main content.
This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Is this page helpful? Backup of Active Directory and System State completed and verified. Remove DC from domain. Power down DC Join new DC to domain. Enable DC as a Global Catalog. Main thing here is that any config in my network services pointing to the original server names will not need updating as the new DC's will be brought back in with the same hostnames.
Your high-level steps seem to be well thought through and OK. Below are some pointers, that might be of help:. Your virtualization environment might also point to your current Domain Controllers, which might pose problems a. Why do MS recomend that you transfer the IP-adress and hostname from the source server to the destination server? Thank you so much for taking the time to post this very useful guide. I'm preparing to transition a global network from to R2 in the upcoming weeks, and this has been great information.
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After successfully moving the Flexible Single Master Operations FSMO roles you can simply demote the previous Domain Controllers, remove them from the domain and throw them out of the window. Transitioning is possible for Active Directory environments which domain functional level is at least Windows Native. This involves moving all your resources from one Windows Server domain to a new and fresh Windows Server R2 domain. Reasons to transition I feel transitioning is the middle road between the two other ways to migrate to Windows Server R2 : Restructuring means filling a new Active Directory from scratch In-place upgrading means you're stuck with the same hardware and limited to certain upgrade paths Transitioning means you get to keep your current Active Directory lay-out, contents, group policies and schema.
Transitioning also means moving to new machines, which can be dimensioned to last another three to five years without trouble. Transitioning is good when: You worked hard to get your Active Directory in the shape it's in. Your servers are faced with aging. Plan your server lifecycle It's not uncommon for a Domain Controller to sit on your network for a period of five years.
Assess your readiness Microsoft has kindly provided a tool to scan systems to assess whether systems are capable of running Windows Server R2 , whether drivers are available either from Microsoft update or on the installation media and what problems you might encounter when deploying Windows server R2. Review the considerations for upgrading Active Directory Domain Services in Windows Server R2 breaks some functionality present in previous versions of Active Directory.
Backups Make backups of all your Domain Controllers and verify you can restore these backups when needed. Documentation It is a good thing to know exactly what you're migrating. Communication When done right your colleagues might not even suspect a thing, but it's important to shed some light on what you're doing.
Both are good things if you'd ask me… Prepare your Active Directory environment Before you can begin to introduce the first Windows Server R2 Domain Controller into your existing Active Directory environment, you first have to prepare the Active Directory.
Depending on your current Active Directory environment you need to use either one of them: adprep. You need to run the following commands on the following Domain Controllers in your current Active Directory environment: Command Domain Controller adprep.
Install the first Windows Server R2 Domain Controller You could already start installing Windows Server R2 on a fresh box and make it a member of the domain, while preparing your Active Directory. Install additional Domain Controllers Installing additional Windows Server R2 Domain Controllers is as easy as purchasing them, licensing them, installing them and promoting them. Check proper installation, replication and updates It is a best practice to review the logs to identify any problems that might have occurred during the promotion.
The logs to scrutinize specifically are: dcpromo. This allows administrators to modify group membership based on how the user authenticates. For example, a user can have access to different resources if they log in with a certificate versus when they log in with just their username and password.
Open Active Directory Domains and Trusts. In the console tree, right-click the domain for which you want to raise functionality, and then click Raise Domain Functional Level. Raise the forest functional level After you've successfully upgraded the domain functional level of all the domains in your Active Directory forest you're ready to upgrade the Forest functional level.
Under Select an available forest functional level , click Windows Server R2, and then click Raise. To run the scan from Server Manager perform the following steps: Tip!
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