Add Client access server with DR MBX to server clients from DR site.

Hello,
We have a medium size implementation at our company. It is as below,
- Two mail box servers (MBX1, MBX2) at production Site.
- One mail box server (MBXDR01 at DR site (Active))
- One DAG (name: IDKUDAG ) (MBX1,MBX2 and MBXDR01 are members)
- Two Client access servers at production site (with MBX1 and MBX2)
There is a high speed WAN connection between two sites.
What I need to do, I want to add additional CAS server at DR site as in case of production site maintenance or outage I want to migrate the DBs to DR MBX and the CAS server handle mail
client’s access.
Can I add a new server at the DR site with the same configuration as the production site???
Or there is another solution for this case.
Please advise.
Best regards,
Ahmed Salah
BR Ahmed Aboutabl

Hi Ahmed,
The CAS configuration for Exchange service in the second datacenter can be the same configuration as you mentioned. For example, the same internal&external namespaces for OWA, Autodiscover, EWS, OAB etc. in two datacenters.
Also make sure the certificate has included all needed namespace for the second site. For your reference, here is an article talked about the details of site resilients:
https://technet.microsoft.com/en-us/library/dd638129(v=exchg.150).aspx
http://www.msexchange.org/articles-tutorials/exchange-server-2010/high-availability-recovery/designing-site-resilient-exchange-2010-solution-part1.html
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make
sure that you completely understand the risk before retrieving any suggestions from the above link.
Regards,
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]
Winnie Liang
TechNet Community Support

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