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OWA and failing over to a secondary site

Posted on 2011-09-22
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Last Modified: 2012-05-12
Hi,

We're using Doubletake to failover a 2003 server running Ex2003 OWA  to a remote site (different subnet) for DR. How do i get this to work so that the URL htttps://webmail.abc.com redirects to the secondary site when it can't see the primary site. I know we'll have to do some changes for Firewalls and A records, want to know what exactly.

Thanks
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Question by:kswan_expert
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Expert Comment

by:Deepu Chowdary
ID: 36584030
The only thing you need to watch out for when using doubletake, is that your servers in your production environment and your servers in your offsite location have to be on the same subnet for failover. So in other words, if your production network is a class c 192.168.1.x network, your offsite location has to be 192.168.1.x, otherwise doubletake cant failover a server thats on a different subnet.
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by:Deepu Chowdary
ID: 36584046
If you are using third party software to do the data replication then you setup the server as per their instructions. Almost certainly it will not involve DR installation.
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kswan_expert earned 0 total points
ID: 36584158
Hey Exchange9, we use Full server failover and you can definitely failover to differenet subnets, we've done it before in a live situation and it worked a treat.

We're fine with Doubletake but do you know how we automatically failover OWA in the following situation:

Currently we have an A record for webmail.abc.com pointing to our LA firewall and this is Nat'd to the server running OWA.  In a disaster the LA site is destroyed so no firewall. How can i set that A record (webmail.abc.com) pointing to LA to go (automatically) to our DR site in NY. So the A record diverts to the IP of fireweall in NY when it can't see LA, and OWA can be accessed through the failed over server?

Cheers
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Author Closing Comment

by:kswan_expert
ID: 37760318
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