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How to phase out existing domain and move into new Windows SBS environment

Posted on 2010-03-30
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Our small business currently has an existing domain (2003 & 2008 Servers) that we want to phase out and bring in a new Windows SBS as our primary domain.  When all is said and done, we want to completely phase out our existing domain altogether.  What is the best way to go about this, gracefully?  We are a small company of 10 employees, so, it is not a big deal to re-create accounts, etc.

In our existing network, we have a Fortinet router, a Windows 2003 server (DC) that provides DNS, DHCP & VPN.  We also want to host Exchange for our internet domain on the SBS server, something we currently do not do.

We already have the Windows SBS installed.  Do we need to set the SBS up on a different range of IP addresses?  Our current range is the default 192.168.1.0 class C.  Should we configure SBS to use a different range, perhaps 10.10.1.0?  If so, how does that mix in with our existing network?

We do have people / employees in another state that VPN to our office, so, we do have to be careful not to disrupt existing activity in our production environment, but, this just about goes without saying unless we were a completely new company, which we are not.

Thanks for any input and advice experts!
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Question by:dstjohnjr
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GMorineau earned 2000 total points
ID: 29134191
My opinion? The simplest is the best. for just 10 users it will not be a problem.

1) Stop your SBS2k3 DHCP and fixed IPs to computers clients.
2) Install the new server with SBS2k8, change your domain and netbios name (just a bit diferent).
2b) RUN ALL SETUP WIZARDS needed in your company.
3) Recreate all users accounts in the new server
4) Do a full mailbox backup creating a PST to each users (internal and remote)
5) In your router change redirection ports to the new server.
6) Remove clients computers from the old domain and add them into the new one
7) Export the pst to Exchange 2007
8) Go drink a good and cold beer (or a cup of tea.....)     :-)

You can mantain your ip range since servers have diferents IPs.
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by:dstjohnjr
ID: 29326921
Thanks and great advice!  The migration / cutover is going pretty well.  Regarding item #7 in your list, "Export the pst to Exchange 2007".  Is there a tool to import all of our users multiple pst files into our new Exchange Server?  or do we do this from within each user's Outlook program?
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by:GMorineau
ID: 29380601
For 10 users? do it one by one. It fast than configure a script with power shell!
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Author Closing Comment

by:dstjohnjr
ID: 31709146
This solution worked great.  Thanks!
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