My current environment is as follows:
Primary_DAG1 - EX-01, EX-02 (All active copies are on EX-01)
I am going to add a 3rd exchange server (EX-03) into a new site called DR. I am assuming I'll just need another domain controller in this site along with new exchange server? I don't believe I'll need another file witness server will I?
Also, in terms of enabling DAC mode on the DAG, should I do this? If we were to completely lose the primary site (natural disaster) we won't be able to manually mount the database copies stored on EX-03 until EX-03 is able to communicate with 1 of the other 2 exchange servers in the primary site.
How would you guys go about settings this up? Thank you!