Exchange Redundancy

I have a 2008R2DC and a 2nd 2008R2 DC (to give redundancy to the AD).

I haven't installed Exchange yet, I have either 2007 and 2010 to use.
I'm hoping to find out if I install exchange on the Primary DC, how do I then get the Exchange redundancy on the 2nd DC?
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Tony GiangrecoCommented:
citrineAuthor Commented:
I am running the STD versions of 2008R2, I think DAG is only supported in Premium.
Any ideas?
Tony GiangrecoCommented:
Redundancy requires an upgrade.
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Simon Butler (Sembee)ConsultantCommented:
Installing Exchange on a domain controller wouldn't work either - bad idea, as recovery of Exchange is complicated.

You need to switch to Enterprise edition of Windows. That will allow you to have multiple virtual machines on the hardware so you can split DC and Exchange functionality.

The other option is Windows 2012 Standard, which allows two virtual machines per host and you can use DAG.

Standard edition of Windows 2008 R2 or less gives you no redundancy options at all.

Tony GiangrecoCommented:
So it looks like an upgrade to enterprise is required in additional to a Virtual DC if you went that route.

Have we answered your question completely?
citrineAuthor Commented:
Is there another solution as I have STD DC's in place?
Simon Butler (Sembee)ConsultantCommented:
You don't need to upgrade the domain controllers.
It is only the server that Exchange is installed on which needs to be Enterprise edition.


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