Detail DNS setting for Exchange DAG

I want to know each and every steps involved for DAG setting in DNS Server.

like : Autodiscover etc

My scenario is :

1. DC with file share witness (   (Windows server 2012)
2. EXCH1 (                     (Exchange 2013)
3. EXCH2 (                    (Exchange 2013)

Also i want to know if one server goes done DAG will be continue serve?

Note : This is a single site environment for testing purpose.
Muhammad AliAsked:
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Zacharia KurianAdministrator- Data Center & NetworkCommented:
Hardik DesaiIT Architect and TrainerCommented:
There are no DNS specific settings that need to be configured via DAG. In Exchange 2013 SP1 and post you can configure IP less DAG and you would not need any IP address at all. Failover cluster manager role will be added automatically while adding mailbox server to DAG.

New-DatabaseAvailabilityGroup -Name DAG5 -WitnessServer DC1 -WitnessDirectory C:\DC1 -DatabaseAvailabilityGroupIpAddresses ([System.Net.IPAddress])::None

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Add-DatabaseAvailabilityGroupServer -Identity DAG1 -MailboxServer EXCH1, EXCH2

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If you have multiple NICs and want to configure MAPI and Cluster communications separate please check these guidelines

Network Requirements for DAG
Muhammad AliAuthor Commented:
My second part of question is , Also i want to know if one server goes done DAG will be continue serve?
Hardik DesaiIT Architect and TrainerCommented:
Yes it will, provided in a 2 node DAG, witness server and other DAG member is online...

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