After spending some time thinking about the question regarding whether you should deploy Exchange 2007 SP1 on Windows Server 2003 or Windows Server 2008, I decided to do some more research on it.
I came up with the table below and I am including the public sources of my information as well. In short, using Windows 2008 could provide a faster migration experience as well as performance improvements. I am actually preferring Windows 2008 now. Hopefully this will help you in your decision.
|Windows 2008||Windows 2003|
|+ Faster installation time – No additional downloads or prerequisites required. Additional components can be installed using an XML file.||+ Familiarity of Windows 2003 – less learning time|
|+ Already Running Windows 2008 and no need to upgrade at a later date.||+ Already a stable base OS for many customers|
|+ Performance and scalability enhancements for Client Access server||- This requires installation of a number of additional hotfixes and Service Packs to get Exchange 2007 SP1 installed|
|+ Multiple subnet failover clusters – support for SCC or CCR in multiple Datacenters without the need for a VLAN to span subnets||- CCR requirement for same subnet restricts options. SCR can be done across different subnets however.|
|+ More Quorum configuration options for clustering.||- There is no supported upgrade path from a Windows Server 2003 running Exchange 2007 to Windows Server 2008|
|- Existing Exchange 2003 servers can’t use Windows 2008 domain controllers that are read only.|
|- Exchange 2003 may not install correctly in a pure Windows Server 2008 forest if you try to install Exchange in a child domain without installing Exchange in the parent domain.|
|- The big unknowns – The “Wait until SP1 rule” that many have.|
This is not by any means a complete list of all of the benefits of going to Windows 2008. This is only what I have found publicly so far as Exchange 2007 SP1 goes. As I spend more and more time with Windows 2008 I am really liking it. I like the new interface for managing roles and features a lot.
Sources of material:
- Running Exchange with Windows Server 2008
- Exchange Server 2007: Platforms, Editions, and Versions
- Exchange Server and Windows Server 2008
- New High Availability Features in Exchange 2007 SP1
- Mission Impossible: In-Place Upgrading Microsoft Exchange Server 2007 from Windows Server 2003 to Windows Server 2008 http://msexchangeteam.com/archive/2007/10/04/447188.aspx