System Administrator

Sebastian Talmon

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Thanks for the insight and documentation. &nbsp;I didn't think it would matter but thought I would confirm by ideas first. &nbsp;I will still give your articles a read to see if there is any additional info I might want. &nbsp;Again much appreciated.
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Thanks for the insight and documentation.  I didn't think it would matter but thought I would confirm by ideas first.  I will still give your articles a read to see if there is any additional info I might want.  Again much appreciated.

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We have two different forests.<br />
<br />
Forest 1 = domainA.local<br />
Forest 2 = domainB.com<br />
<br />
These are two separate forests but there is a trust between the two of them in order to allow access to certain systems and services on the domainB.com network. &nbsp;There is also a Site to Site VPN between the two locations. &nbsp;You can see the entire directory in the attached image.<br />
<br />
domainB.com has all domain controllers with 2008 R2. &nbsp;domainA.local has 2003 Domain Controllers. &nbsp;The forest level of domainB.com has been left at 2003 due to not knowing if raising the forest level will affect the trust in any way. &nbsp;<br />
<br />
Is it safe to say I can raise the function level of the domainB.com trust to 2008 R2 without affecting the domainA.local domain. &nbsp;I would like to take advantage of other features in a 2008 R2 domain level. &nbsp;<br />
<br />
Any assistance is appreciated.<br />
<a href="https://filedb.experts-exchange.com/incoming/2014/11_w47/883557/Forest.jpg" target="_blank" class="file-inline" title="Forest Level (3 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Forest.jpg</a>
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Forest.jpg

We have two different forests.

Forest 1 = domainA.local
Forest 2 = domainB.com

These are two separate forests but there is a trust between the two of them in order to allow access to certain systems and services on the domainB.com network.  There is also a Site to Site VPN between the two locations.  You can see the entire directory in the attached image.

domainB.com has all domain controllers with 2008 R2.  domainA.local has 2003 Domain Controllers.  The forest level of domainB.com has been left at 2003 due to not knowing if raising the forest level will affect the trust in any way.  

Is it safe to say I can raise the function level of the domainB.com trust to 2008 R2 without affecting the domainA.local domain.  I would like to take advantage of other features in a 2008 R2 domain level.  

Any assistance is appreciated.

Will my AD Trust be affected by raising the forest level?

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.

Active Directory

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.