Does DNS have to be on a DC in a domain?

I have a domain and currently have only one DNS server and that is also my DC.  I would like to have another DNS server in my environment.  Does this need to be promoted to DC as well to setup the proper replication?
Petra_fan1Asked:
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Tiras25Connect With a Mentor Commented:
No it doesn't have to be on DC.  The first DNS always good to be on DC, but the 2nd and so on doesn't have to be.  
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Tiras25Commented:
So what is the reason for the 2nd DNS?  For redundancy I assume.  Then why not to have the 2nd DC as well with DNS on it?
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subhashmCommented:
If you install DNS on a DC, the benefits is AD Integrated zones.
AD Integrated zones are writable (not like prmary/secondary)
Data will be stored in AD database, and AD replication will replicate the DNS as well.
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Petra_fan1Author Commented:
My environment is pretty small (about 5 people), but I mainly wan this since I may periodically reboot my DC for something and wish to have a secondary DNS server so the internet doesn't go down while the server reboots.  I could do a second DC, but that is way above what I need at this time.  Does it have to be AD integrated to replicate with the one on the DC?
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Petra_fan1Author Commented:
What is the process to set up replication so that the two servers sync if the second one is not a DC?  
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Tiras25Commented:
You may want to make it a separate question and add points.
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Petra_fan1Author Commented:
Partially answered.
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