troubleshooting Question

DAG Design query

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kam_uk asked on
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I am trying to understand Exchange 2010 and DAG's and was hoping someone could help me...

At the moment, for Europe, we have an A/A/P SCC cluster in London with an SCR target in Paris, and an A/A/P SCC cluster in Paris with an SCR target in London. We large offices in both London and Paris.

If we moved to Exchange 2010, would we just use one large DAG, spread over the London and Paris AD sites with 'normal' distribution being that half the DB's were in London and half the DB's were in Paris?

Or would we have two seperate DAG's, stil stretching across London and Paris, but one DAG for London users and one for the French guys?

A couple of different questions too:

2. Am I correct in thikning that that there can only be one CAS array per AD site per DAG

3. Am I correct in thinking that a CAS array cannot spread across AD sites (i.e. there has to be a seperate CAS array for London and one seperate one for Paris)?
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