Migrate windows 2003r2 AD to windows 2012r2 AD and exchange 2003 to exchange 2013 Steps

Hi
requesting advice,
how can i migrate windows 2003 ad + windows 2003 exchange to windows 2012r2 AD+ exchange 2013 DAG (planing to implement 2 mail box and 2 hub+cas hyper-v vm servers )
kindly guide me how can i migrate and what is the best practice method
requesting step by step procedures to follow
Regards
Ratheesh
Ratheesh

Hi Ratheesh,
Migrating AD from Windows Server 2003 domain to Windows Server 2012 R2 domain:
Introducing the first Windows Server 2012 Domain Controller (Part 1 of 2)
http://blogs.technet.com/b/askpfeplat/archive/2012/09/03/introducing-the-first-windows-server-2012-domain-controller.aspx
Step-By-Step: Active Directory Migration from Windows Server 2003 to Windows Server 2012 R2
http://blogs.technet.com/b/canitpro/archive/2013/05/27/step-by-step-active-directory-migration-from-windows-server-2003-to-windows-server-2012.aspx
Since we cannot migrate Exchange 2003 to 2013 directly, you can either migrate to Exchange 2007 or Exchange 2010 then to Exchange 2013.
Checklist: Upgrading from Exchange 2003 and Exchange 2007
http://technet.microsoft.com/en-us/library/ff805038(v=exchg.141).aspx
Checklist: Upgrading from Exchange 2003
http://technet.microsoft.com/en-us/library/ee332309(v=exchg.141).aspx
Part 1: Step-by-Step Exchange 2007 to 2013 Migration
http://blogs.technet.com/b/meamcs/archive/2013/07/25/part-1-step-by-step-exchange-2007-to-2013-migration.aspx
Checklist: Upgrade from Exchange 2010
http://technet.microsoft.com/en-us/library/ee332309(v=exchg.150).aspx
I hope this helps.
Amy

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According to your description, I recommend you consider using DAG to achieve your requirement.
The following steps for your reference:
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3.After replication, you can mount all the databases on the new server.
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Niko Cheng
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This no way a resolution. This won't work at all as Both OS will be different and you can't form the Cluster.
Please Unmark it!
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Hi,
Could you try use the following method to fix this issue first?
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1. Please run the System Update Readiness Tool on this affected server. Please download this tool from the following Microsoft article:
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==================================
2. Use Fix it tool to reset the Windows Update components.
1. Open the following link.
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3. Use the System File Checker tool to repair missing or corrupted system files
1. Open the command promote with Administrators.
2. At the command prompt, type the following command, and then press ENTER:
sfc /scannow
Any errors are found in the steps above, please let me know.
Hope this helpful.
Best Regards,
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Hi
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Migrate windows 2003r2 AD to windows 2012r2 AD and exchange 2003 to exchange 2013 Steps

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