configure Exchange 2010

I am building up a new Exchange 2010 to replace my Exchange 2007 server.  I'll migrate over mailboxes after the new server is built.  I have 2 initial questions:

1. My Exchange 2007 server contains all elements of Exchange, from Hub Transport to Edge Transport.  
    a.  Can I build up my Exchange 2010 server with Client Access, Hub Transport, Mailbox, Unified Messaging, and Edge Transport as well?  
-and-    
    b.  Can the 2007 coexist with the 2010 server, each with all the roles installed, while I migrate the mailboxes?

2.  My setup file for Exchange 2010 includes SP1.  I know that SP3 exists for 2010.  Can I go straight to SP3 after initial configuration?

Thanks in advance!
(BTW, I'm working on Server 2008 R2)
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cuiincAsked:
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Sushil SonawaneCommented:
1. My Exchange 2007 server contains all elements of Exchange, from Hub Transport to Edge Transport.  
    a.  Can I build up my Exchange 2010 server with Client Access, Hub Transport, Mailbox, Unified Messaging, and Edge Transport as well?  

Ans :  You can build your exchange server 2010 with client access, hub transport mailbox and unified message. You can not install edge transport on the same server.  


    b.  Can the 2007 coexist with the 2010 server, each with all the roles installed, while I migrate the mailboxes?

Ans : Yes there is no issue.

2.  My setup file for Exchange 2010 includes SP1.  I know that SP3 exists for 2010.  Can I go straight to SP3 after initial configuration?

Ans : Yes u can.

For exchange 2007 to 2010 Migration more detials refer below link:

http://araihan.wordpress.com/2009/11/26/transitioning-from-exchange-2007-to-exchange-2010-step-by-step/

https://www.simple-talk.com/sysadmin/exchange/upgrade-from-exchange-2007-to-exchange-2010---part-1/

http://www.petenetlive.com/KB/Article/0000236.htm

http://social.technet.microsoft.com/Forums/en-US/e8f4fdd0-87d5-4e0d-b824-dc323d47cac2/stepbystep-documentguide-for-transitioningexchange2007exchangeserver2010

http://exchangeserverpro.com/wp-content/uploads/Exchange%20Server%202007%20to%202010%20Migration%20Guide%20V1.0%20-%20Planning%20Chapter.pdf
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Simon Butler (Sembee)ConsultantCommented:
Your 2007 server does NOT contain the Edge role. That isn't possible.
I wouldn't bother with your setup file for Exchange 2010 SP1, download SP3 from the public download site. If you are using UM, download the language packs.
If you need to coexist then you will need two external IP addresses and two URLs.

Simon.
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cuiincAuthor Commented:
The Edge role is not a part of Exchange 2007: understood.

I WILL need the 2 servers (2007 and 2010) to coexist while I migrate the mailboxes.  I can handle the 2 external IP addresses and URLs.  

I am digesting the above articles currently.  In the meantime, I am prepping my new server for Exchange 2010 installation.  I am of the understanding that it will NOT contain the Edge role, as this role is designated for the periphery of my network.  Do I need to build a new, additional server for this?
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cuiincAuthor Commented:
Sorry, one more question: just to be clear... my ISO for Exchange 2010 with sp1 (x64) is 4 GB.  Are you saying I can install fresh from the Exchange 2010 SP3 file, which is only ~550 GB?  This doesn't seem right...
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Simon Butler (Sembee)ConsultantCommented:
Your concern is quite common, and that is probably why we see so many people installing Exchange 2010 SP1, when you can go straight to SP3. All service packs are cumulative - they contain the complete product.
The only difference, as I wrote above is that the Service pack dowload does not contain the UM language packs - which are about 300mb each. You can download those on their own.

You don't need an Edge server - personally I think Edge is a waste of money. It only does SMTP traffic and if you want something to sit in a DMZ and filter email before it hits Exchange you can get much better products for a lot less money than an additional Exchange licence.

Simon.
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