Need to migrate from SBS 2008 to Windows 2008 and Exchange 2010

Hi Experts,

I'm having SBS 2008 during past year, and it's has some issues, i'm not happy with it at all.
So i'm planing to Have two servers (win 2008) and deploy AD and Exchange 2010 separately.

And I need to transfer all my backups AD and mails box store, including users profiles should not change at any cost.

What is the best possible scenario ?

Thanks a lot !  
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Glen KnightCommented:
Forgot to say once you have installed Exchange 2010 and moved the mailboxes leave both Exchange servers running for a few days this way Outlook will automatically update itself with the new server name so you won't have to do it manually.

You will also need to update any rules you have forwarding port 25 and 443 to your SBS server to the new Exchange Server.
Glen KnightCommented:
The easiest option is to migrate to Windows 2008 and Exchange 2010.
The following steps will do this for you:

1) Install Windows 2008 server as a member server of your existing domain.
2) Run ADPREP /FORESTPREP from the 2008 DVD on the SBS server to update the schema
3) Run DCPROMO on your new server to make it a domain controller of the existing domain during this process select the advanced link and select to make it a DNS server.
4) Install the DHCP role on your new server and create the scopes identical to the ones on your SBS server with te exception of the DNS server needs to be specified as your new server.  Authorise the server and activate the scope.  This will cause the SBS service to be disabled and the clients will get a new IP address from your new DHCP server.
5) Update your SBS server so it is now pointing to your new Domain Controller for DNS and resart the NETLOGON service.

6) Install your second server and configure it to use the new DNS server for DNS and join it to the domain as a member server.
7) Install Exchange 2010 as an additional server of your existing Exchange Organisation (to do this the Exchange on your SBS server must be running Service Pack 2)
8) Follow the Microsoft Guide for transitioning to Exchange 2010:
9) Once all the mailboxes/public folders/OAB's etc have been rehomed then uninstall Exchange 2007 fromthe SBS server.

10) Recreate the shares that are in your SBS server on your new server.
11) Backup and restore the data to it's new location
12) Update drive mapping/ active directory attributes (home folder/profile path)

13) Transfer the FSMO roles to your new Domain Controller as per:
14) Run DCPROMO on the SBS server to remove active directory from it
15) Shutdown SBS server and remove it from the domain.

Shakthi777Author Commented:
thanks a lot demazter !

btw i have installed SSL to SBS and my emails are encrypted with Message Labs Boundary Encryption;

how do I handle that part ?  I really appreciate you help !
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Glen KnightCommented:
You will need to request a new SSL certificate in 2010 there is a wizard in the console.

As for the message labs I am not familiar with their products? Do you just send your emails on to their smart host?
If so you would configure this in te send connector for 2010 in the properties of the send connector specify a smarthost instead if DNS.
Shakthi777Author Commented:
gr8 !
What happens to the sbs 2008 licenses when you upgrade to full server 2008/exchange 2010? Do you need to buy all new licenses?
Shakthi777Author Commented:
for this situation you need to check with Microsoft licensing support team, in my case we had Microsoft Gold Partnership, so I had enough license for internal use.
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