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Exchange 2010 Installation Order

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Exchange 2010 Installation Order - 7.Feb.2011 3:20:22 PM   


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What is the correct order to install the Exchange 2010 roles in and what are the supported co-existence scenarios?

< Message edited by morehouse92 -- 8.Feb.2011 7:33:41 AM >
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RE: Exchange 2010 Installation Order - 8.Feb.2011 9:30:45 AM   


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There is no "correct" order but there is a recommended order! If you plan to deploy each role on a different physical server, Microsoft recommends installing the client access role first, followed by the hub transport and then the mailbox role (the same order to apply service packs and updates). These are the required roles but if you wish to deploy the others, then unified messaging and edge transport can be deployed anytime after that in any order.

If you wish to combine roles on the same physical server, then client access, hub transport, mailbox and unified message can be combined on the same server. If you will be implementing load balancing or DAG then unified messaging must be on a different server.


Ibrahim Benna - Microsoft Exchange MVP
Forum Moderator

(in reply to morehouse92)
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RE: Exchange 2010 Installation Order - 22.Feb.2011 2:26:57 PM   


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Agree with De, its all depends on your requirements


Gulab Prasad,
Technology Consultant
Exchange Ranger
Check out CodeTwo’s tools for Exchange admins

(in reply to de.blackman)
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RE: Exchange 2010 Installation Order - 23.Feb.2011 12:17:08 AM   


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You should always start with CAS, then Hub and Mailboxes. Make sure CAS proxy works before flipping the DNS on the CAS side.
overview of Exchange 2007 to Exchange 2010 migration
  • Upgrade Exchange 2007 servers to Exchange 2007 SP2
  • Upgrade AD forest and domain level to Windows Server 2003 functional or higher.
  • Upgrade one GC domain controller in each AD site to Windows Server 2003 SP2
  • Setup Server 2008 R2 x64 for Exchange 2010.
  • Install prereqs on the server
  • Run setup on Exchange 2010 server. Install CAS role first.  This will upgrade the schema.
  • Point client access to Exchange 2010 CAS Server (OWA, ActiveSync, etc)
  • Install Exchange 2010 Hub Transport role
  • Point client access to Exchange 2010 Hub Server (POP, IMAP, SMTP, etc.)
  • Install Exchange 2010 mailbox role
  •  Move mailbox from Exchange 2003 to Exchange 2010 using “Move Mailbox Wizard” from Exchange 2010.
taken from Exchange 2010 Tutorial

(in reply to morehouse92)
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RE: Exchange 2010 Installation Order - 6.Sep.2011 4:09:51 AM   


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CAS followed by HUB transport and then Mailbox server role.

(in reply to morehouse92)
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