add exchange 2010 server off site

I currently have 2 Exchange 2010 enterprise servers in a DAG load balanced. I am looking for a solution to have our Exchange environment replicated to our DR site. What is the best path to this solution?
USGLOBALAsked:
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Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
If the server is not virtualized or you do not have your SAN replicated to the DR site (I am assuming you are using a SAN for your storage).  then my suggestion would be to add another server as part of the DAG and this server will reside at your DR site.  If want true replication then look at LifeKeeper and Double Take:

http://us.sios.com/products/datakeeper-cluster/
http://www.visionsolutions.com/products/dt-avail.aspx
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AmitIT ArchitectCommented:
Is this business requirement? Setting up DR site is a pretty expensive solution. You just don't have DR for Exchange DB, you need to include CAS, Hub, HLB, 3rd party tools, like BES etc. So, before you think further on site-resilience, you need to look all these factors too. Also, You should get a consultant for DR design. Just to start read this:

http://www.msexchange.org/articles-tutorials/exchange-server-2010/high-availability-recovery/designing-site-resilient-exchange-2010-solution-part1.html
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USGLOBALAuthor Commented:
Unfortunately we are not using a SAN for the DAG. The DB resides on the servers with one being mounted and the other being a copy. This configuration has worked well when either server was down for any reason.

To answer Amit's question, this is a business requirement. We also have BES servers.
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AmitIT ArchitectCommented:
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