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Exchange 2010 SP3 CAS Failover

Posted on 2014-10-21
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Last Modified: 2014-11-03
We are looking to implement a DR\Failover plan for our Exchange CAS servers. We are having a tough time leveraging a solution for having the DR CAS server take over in the event of a failure.

Our current setup is as follows:
Production:
PROD-CAS01
PROD-CAS02
(Above servers are in a CAS array named PROD-CAS00 which is a VIP being load balanced by a KEMP NLB)

PROD-DB01
PROD-DB02
(The above DB servers and the DR-DB01 server are in a 3-node DAG group)

Our DR setup is as follows:
DR-CAS01

DR-DB01

The idea is that if the Prod CAS servers as well as the KEMP NLB goes offline in production, mail flow in production will be redirected to the DR CAS server. Ideally we would like to keep the Outlook clients connected to exchange via the DR-CAS01 server.

Any direction\suggestions would be appreciated.
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Question by:GR JN
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Simon Butler (Sembee) earned 2000 total points
ID: 40395790
You are probably trying to make it too complicated.
In the event of a complete loss of the site, simply change the DNS records to point to the server that is now live. Don't try and automate it.

I work on the basis that if you have lost a site, then you will have bigger problems to worry about than a 10 second DNS change.

Simon.
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