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Windows 2003 DNS Server

Posted on 2013-06-27
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Last Modified: 2016-11-23
I am migrating 3 older Dell's to a very beefy IBM server running VMware ESXi 5.1

While I was given budget for hardware I was not for software so re-using my Windows 2003 Server license on the new virtual servers.

I have 2 DNS servers and 1 DHCP server. I don't need 2 DNS servers. Can I set 1 Windows 2003 server to ask as DNS1 and DNS2? I know I can do this on Linux and might just use Linux but would rather use Windows as it's quicker to setup.
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Question by:Robert Saylor
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by:arnold
ID: 39283263
You could make it appear as though there two dns servers by having one server have two IPs.
If your setup is such that the VM server is in a high availability mode, you should be fine.

Does your setup require an AD? If not, you could achieve DNS and DHCP using Linux VMs.
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by:Robert Saylor
ID: 39283319
My setup is AD. I will add a 2nd nic and see if it will allow me to setup 2 name servers and dhcp on the same VM.

Will try that tomorrow after I move peach tree. Got backup exec working today. The SAS pass through I am very impressed with its performance. Was hitting about 4,000 mb/min.

Can I do Linus dns servers, bind, with AD?
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arnold earned 500 total points
ID: 39283380
You can not actually run two DNS services, by usng two IPs on the same server, you make it appear as though there are two DNS servers where n actuality there is only one that responds on two different IPs.

Fr redundancy, you should have two DNS server in two separate VMs and the same is true for DHCP with a split scope.

You can configure linux DNS servers to slave data from the AD DNS SERVER.

It depends on your experience.
You could configure the Linux to forward requests based on the AD domain to the AD DNS.
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by:Robert Saylor
ID: 39283865
Thanks, so at least 1 DNS has to be Windows? I have 20+ years of Linux so that should not be too hard to setup Linux as a 2nd DNS. I will setup another Linux VM as DHCP unless you think it should be Windows for AD.
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by:arnold
ID: 39284155
DHCP is up to you with AD you usually need to "Authorize" a DHCP.  When dealing with windows it is done without a thought, so not sure of the significance of authorizing.
For my own info and it might be useful to you http://technet.microsoft.com/en-us/library/cc781697%28v=WS.10%29.aspx

You should have no issue running a DHCP on a linux box. No way a windows box will shut it down.

You may want to use binds split
The issue deals with _msdcs.addomain.local this is the DNS zone that gets queried to locate a DC
nslookup -q=srv _ldap._tcp.dc._msdcs.addomain.local

You would need the three zones including the reverse.
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Author Closing Comment

by:Robert Saylor
ID: 39284221
Thanks! I will most likely create 2 Windows VM's and run then as NS and one in addition as DHCP. That's how it is now. I will be decommissioning my old AD soon as I have already started putting the new AD on the VMware server. Thanks for your help. It's been going very smooth just time consuming.

Note: I am still keeping the existing AD name just will remove the other 2 older AD servers from the farm when all done.
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