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Migrate from Server 2003 Standard to Small Business Server 2011

jdr1237 used Ask the Experts™
I have an environment with the following servers:
1) Two domain controllers running Server 2003 Standard 32 bit.  One server is 1 1/2 years old and the other is 7 years old.

2) One member server running Server 2003 Standard with Exchange 2003, 32 bit

3) Only 5 users in the domain.

The Exchange server is old and needs to be replaced.  Given the small organization, I am contemplating going to Small  Business Server 2011 on new harware.  Can I migrate this Windows Server 2003 network to Small Business Server 2011?
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Top Expert 2011
This should be no problem, you need to install the sbs 2011 in migration mode.

The process would be pretty much the same as migrating SBS 2003 to SBS 2011. Some checks are specific for SBS so these can not be done, but these you can just skip then.
Before you start make sure you have a good backup of your complete environment so you can always go back if needed.

Most important thing is to check your domains health and make sure there are no problems before you start. A good start would be here: http://demazter.wordpress.com/2011/06/12/migration-tip-1-source-server-health/ and here: http://msmvps.com/blogs/bradley/archive/2010/12/23/sbs-2011-migration-keys-to-success.aspx

If you have the abbillity it also would be a good start to virtualize your existing domain and do a test migration in a separated environment.

If the end goal is to only have the SBS 2011 server it may be another option to look at the www.sbsmigration.com this is another migration method that will leave your original domain almost untouched.

Or for just 5 users a clean installtion and preparation would be a good alternative, only you need to reconnect all clients and migrate data and settings manually.
I agree with Ronny. With such few users, I would start a fresh with SBS 2011.
Then backup your users Mailboxes to pst files and then import them back once connected to the new system.