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Exchange Server 2007 Supported Configuration

ALIAS      ROLE      VERSION      EDITION      TYPE      OS
CAS07A      CAS      2007-SP3      Enterprise      VM      Server 2003 Enterprise x64 SP2
CAS07B      CAS      2007-SP3      Enterprise      Physical      Server 2003 Standard x64 SP2
EDGE07A      Edge      2007-SP3      Standard      VM      Server 2003 Enterprise x64 SP2
EDGE07B      Edge      2007-SP3      Enterprise      Physical      Server 2003 Standard x64 SP2
HUB07A      Hub      2007-SP3      Standard      VM      Server 2003 Enterprise x64 SP2
HUB07B      Hub      2007-SP3      Standard      VM      Server 2003 Enterprise x64 SP2
HUB07C      Hub      2007-SP3      Enterprise      Physical      Server 2003 Standard x64 SP2
MBX07A      Mailbox      2007-SP3      Enterprise      Physical      Server 2003 Standard x64 SP2
MBX07B      Mailbox      2007-SP3      Enterprise      Physical      Server 2003 Standard x64 SP2
MBX07C      Mailbox      2007-SP3      Enterprise      Physical      Server 2003 Standard x64 SP2
CAS10A      CAS      2010-SP1      Standard      VM      Server 2008 R2 SP1
CAS10B      CAS      2010-SP1      Standard      VM      Server 2008 R2 SP1
HUB10A      Hub      2010-SP1      Standard      VM      Server 2008 R2 SP1
HUB10B      Hub      2010-SP1      Enterprise      VM      Server 2008 R2 SP1
MBX10A      Mailbox      2010-SP1      Standard      VM      Server 2008 R2 SP1

Above is my current Exchange environment. We just found out that we need to convert some Enterprise editions to Standard editions. Enterprise keys were used in situations where they should not have been. Our plan is to replace the following servers: CAS07A, CAS07B, EDGE07B & HUB07C. The new servers would be Windows Server 2008 R2 Standard SP1 running in VMware ESXi 4.1.

My question is this: Is this configuration supported by Microsft and is it even feasbile WITHOUT reloading other servers with the same roles. For instance... can I have Hub transports with different operating systems? Is there any reason why the edges would have been setup with Enterprise licenses? As far as I can tell I just need my 3 2007 mailbox servers to have Enterprise licesnes (ignore the 2010 stuff - this is just in testing right now).

Keep in mind that I already am aware that my 2007 Exchange servers running on VM's with Windows Server 2003 are not supported configuration. I inherited the situation - I didn't create it.

e_aravind

The closest printed article regarding the licensing:
Exchange Server Licensing
http://www.microsoft.com/exchange/en-us/licensing-exchange-server-email.aspx

Licensing FAQ
http://www.microsoft.com/exchange/en-us/licensing-faq.aspx

ASKER CERTIFIED SOLUTION

Nenadic

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CAITMAN

ASKER

Thanks Nenadic! That is exactly the answer I was looking for.

I have already reloaded one of my CAS servers on Server 2008 R2 and it is running great.

Nenadic

Good to hear. Good luck.