Exchange 2010 redundancy

I have an exchange 2010 server with all roles.  I have a backup exchange box off-site and wanted to get it setup so if the main one dies I can have the backup resume.  Used to use 3rd party applications to do this but I hear its easy to do with exchange 2010?  What all is required to setup and if a disaster occurs, how do you get the other one active (dns change internally and change mail delivery from firewall to hit backup server?).
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rhwimmersAsked:
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Simon Butler (Sembee)ConsultantCommented:
You would need to evaluate whether you want to upgrade to Exchange 2013. If you have any Outlook 2003 clients then you cannot do the upgrade for example.

As for the process - it is documented on TechNet what needs to be done.
Install Windows, install prerequisites, install Exchange, configure the DAG, setup the databases. Obviously there is a lot more to it, so I suggest some reading.

Simon.
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Simon Butler (Sembee)ConsultantCommented:
What is the underlying OS? If it is Enterprise edition of Windows then you can setup a DAG, which will replicate the data, then use a CAS Array and a load balancer.
If the underlying OS on either end is standard edition then you are going to migrate to a new machine with Enterprise edition or Windows 2012 standard.

Simon.
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rhwimmersAuthor Commented:
2008 r2 standard.  So I can't replicate exchange with std edition08 on exchange 2010 without 3rd party tools, but server 2012 with exchange 2010 allows it?
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Simon Butler (Sembee)ConsultantCommented:
Correct - because it uses clustering.
The clustering technologies are not in Windows 2008 R2 standard, but they are in Windows 2012 standard (because there is no Enterprise edition).

I would look at the costs between third party tools and replacing the Windows OS.

Simon.
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rhwimmersAuthor Commented:
Once I get 2012 OS for the exchange servers what is the process?  Should we go to exchange 2013 at the same time, what's gained?
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rhwimmersAuthor Commented:
Thanks for the info
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