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Can any one please share some knowledge or experience on this?
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Can any one please share some knowledge or experience on this?

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we woud like to have Windows DNS Server ( 3 to 4) in main site and 3 to 4 server in DR to provide high availability and Disaster recovery. I need guidance to make a proper design and have following questions. <br />
<br />
Can we have three primary DNS servers (two in main and one in DR site) with read/write ability? If yes, then we are plaining to put these server behind DMZ zone and these servers will not be serving client queries. <br />
We will have two secondary servers in main site and two in DR servers (only with read/write option) in DMZ zone to expose them to the internet. <br />
&nbsp;Is this right approach to design and build DNS Infrastructure to offer DNS services to customer?
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we woud like to have Windows DNS Server ( 3 to 4) in main site and 3 to 4 server in DR to provide high availability and Disaster recovery. I need guidance to make a proper design and have following questions. 

Can we have three primary DNS servers (two in main and one in DR site) with read/write ability? If yes, then we are plaining to put these server behind DMZ zone and these servers will not be serving client queries. 
We will have two secondary servers in main site and two in DR servers (only with read/write option) in DMZ zone to expose them to the internet. 
 Is this right approach to design and build DNS Infrastructure to offer DNS services to customer?

DNS Deployment with higavailability and Disaster Recovery

Disaster Recovery is the planning for and creation of policies and procedures related to the resumption or continuation of an organization's functions following a catastrophic event. The term is most frequently used in relation to failure of networks, but DR preparations also include other business systems and personnel considerations.

Disaster Recovery

This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.

Windows OS

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.