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Exchange 2010 CAS Array with NLB and ESXi

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Last Modified: 2013-11-29
Hello,

I have built an Exchange 2010 environment in ESXi 4 with two servers (EXCH01 and EXCH02).  I have a DAG setup with these two servers to ensure fault tolerance on the database, but I would also like to implement a CAS Array to ensure fault tolerance on the client side as well.

I followed these articles and was able to get CAS01 and CAS02 setup with NLB.
http://blogs.kraftkennedy.com/index.php/2009/11/25/configuring-nlb-for-exchange-2010-cas-load-balancing/
http://www.shudnow.net/2010/03/17/exchange-2010-rtm-high-availability-load-balancing-options/

It appeared to work just fine for OWA access, but my outlook clients could not connect.  I did set the -RPCClientAccessServer attribute to be my FQDN (the same used for OWA).

My questions are...
1) Has anyone been able to get this working in a fully virtualized environment?

2) Can I simply disable Outlook Anywhere on EXCH01 and EXCH02 to test the CAS array?

3) What other items should I check to see why this will not work?

Thanks in advance for the help.

Christopher
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