Update: the Microsoft Exchange Team has announced that it is supported to run the following Exchange versions on Windows Server 2008 R2 SP1:
- Exchange 2010 SP1
- Exchange 2010 RTM
- Exchange 2007 SP3
The best news of all is that Windows Server 2008 R2 SP1 now includes all of the pre-requisite hotfixes for Exchange Server 2010 SP1, so no more manually downloading and installing the 6 or 7 patches that were previously needed.
Original post below:
Henrik Walther has answered the question from many Exchange 2010 administrators as to whether it is supported to run Windows Server 2008 R2 Service Pack 1 (SP1 has just been released) on Exchange 2010 servers.
From Henrik’s blog:
I see more and more questions from folks asking whether it’s supported to install Exchange 2010 SP1 on Windows Server 2008 R2 with the new SP1 applied or even upgrade an existing server Exchange 2010 SP1 server running on Windows Server 2008 R2 to this new service pack.
There’s still no information about this in the Exchange Server 2010 Supportability Matrix, but according to the Exchange team this is not supported with the current Exchange 2010 SP1 build but will be with Exchange 2010 SP2 (or with some luck with a future Exchange 2010 SP1 roll-up update).
So if you were considering the upgrade its best that you hold off until an official support statement is made.