Advice on DNS setup

I have a few servers with about 200 clients on each server. I would like to add a few new things to make some redundancy going on. Ive some what hit a dead end on setting up the main DNS server.

Q1. What software do you run for your DNS server?
Q2. What do you use to gather in info on each server for the Main DNS server?
Q3. What specs cpu/ram/hd (AMD 1700+ 512/1gig ram 20gig what i have now)
Q4. Anything I'm missing?

I don't use cPanel or any control panel everything is hand done! (1 server has webmin) Each server runs Bind9, direct root is disabled, each server is in a different location.

I think that sums it up...

This is my current setup:

Code: 
      __ server1-ns1,ns2
     |__ server2-ns3,ns4
     |__ server3-ns5,ns6
     |__ server4-ns7,ns8
     |__ serverx-nsX,nsX
This is my ideal setup

Code: 
Main DNS__dns1
     |
     |__ server1-ns1
     |__ server2-ns2
     |__ server3-ns3
     |__ server4-ns4
     |__ serverX-nsX
     |__ backupMailServ (MX2)

 

 

 

 

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