I have a DC environment in which i am also running an AD integrated DNS.
Just to add redundancy i added one more ADC in the current environment and joined it to the existing domain while running the setup of dcpromo. Active directry database on the DC was successfully replicated on the ADC and i can see all the objects in ADC. Then i installed DNS on ADC, and it also gets synchronized with the master DNS at DC, getting all the DNS records from there.
Now, i am confused that how can i add redundancy at client end. If DC goes down, how clients will automatically go to ADC.