Exchange 2010 Clustering Configuration

Hi,
I have some question regarding Exchange 2010 Clustering:

1. Can we do clustering multiple nodes and do DAG configuration at DC & DR as shown in the diagram? If yes, is it OS level cluster or Exchange application layer clustering?

2. Please answer me the same sense of question above for Exchange CAS Array configuration.

3. Can you confirm that the Exchange servers at DR will be synchronized and it will run automatically when the servers at DC server is down? Somehow I found that the exchange at DR may be in different subnet mask already if I am not mistaken.

4. For NLB feature of windows, do we need to do cluster hosts at OS level first or not?

5. To enable NLB, do we need to have two separate network adapter or just two different ports?

6. If client is operating with Windows 2008 standard, can we enable NLB feature for Exchange CAS Array?

Thanks
JaniesAbramAsked:
Who is Participating?
 
James HConnect With a Mentor IT DirectorCommented:
EQL = Equallogic SAN
SRM = VMWare Site Recovery Manager (feature of Enterprise Plus or Cloud versions)
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James HConnect With a Mentor IT DirectorCommented:
1. There is no diagram, please post it.
2. There is no diagram, please post it.
3. There is no diagram, please post it.
4. OS level clustering
5. two seperate adapters
6. No, Server 2008 r2 Enterprise is required for as you will need Windows Clustering and it only comes with Enterprise or above

With your scenario, you will need to split the roles if you will rely on WCS to handle load balancing for your DAG and CAS as those two roles require WCS.

You will have at least two CAS in your array and two DAG members in your array.
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JaniesAbramAuthor Commented:
Thanks Spartan_1337,
Here is the diagram: Diagram
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James HConnect With a Mentor IT DirectorCommented:
Where is your witness server?
I see you have a physical server at the DR but only one NIC, you cannot use that with DAG without a secondary NIC.
I assume the EQL is just for backup replication, no VMWare servers at DR for SRM.

Let's go through your questions:
1. Yes you can do DAG with WCS @ DR site
2. Yes, you can since it's a single server (no CAS Array @ DR Site)
3. It will run, however you will need a witness server @ DR Site as the DAG will lose quorum and fail due to too many partners offline.
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JaniesAbramAuthor Commented:
EQL = ?
SRM = ?
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