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I assume its a single domain forest.<br />
<br />
Are you performing inplace upgrades ?<br />
<br />
Keep in mind that VM based snapshots roll backs are absolutely not supported for AD.
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I assume its a single domain forest.

Are you performing inplace upgrades ?

Keep in mind that VM based snapshots roll backs are absolutely not supported for AD.

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I have three Windows 2003 DCs. Two are Virtual machines and one is physical.<br />
<br />
I want to upgrade to windows 2008 Active Directory but wanted to get some information and procedures if anything should go wrong. How would i roll back to 2003 AD if i need too?<br />
Any gotchas with the upgrade? <br />
<br />
i want to make sure i have all the ducks in a row if AD is down.<br />
<br />
Thanks
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I have three Windows 2003 DCs. Two are Virtual machines and one is physical.

I want to upgrade to windows 2008 Active Directory but wanted to get some information and procedures if anything should go wrong. How would i roll back to 2003 AD if i need too?
Any gotchas with the upgrade? 

i want to make sure i have all the ducks in a row if AD is down.

Thanks

Roll Back Active Directory if failed to update to 2008 ADDS

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 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.

Windows Server 2008

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).