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Windows Server 2012 Thread, Replace DNS role on Server 2003 to Server 2012 in Technical; Hi all, We have 1 DNS role running on Server 2003. This server, along with another running Server 2003 R2 ...
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    Replace DNS role on Server 2003 to Server 2012

    Hi all,

    We have 1 DNS role running on Server 2003. This server, along with another running Server 2003 R2 is being replaced by a beastly Dell running Server 2012.

    As it stands, our DNS looks very messy on the Server 2003 box. There are well over a thousand records and we have less than 500 computers. I can clearly see the same IP address on multiple host records. Tried to resolve this in the past with DNS Scavenging but to no success.

    Despite this messy looking setup, everything seems to work perfectly well.

    In an ideal world, I would rather just disable DNS on Server 2003, install the DNS role on Server 2012, change DHCP settings, etc go round the school logging on all the computers to test they are updating their records then remove the DNS role from the old server.

    I think this is what I did last time (5 years ago) but just checking, is this an ok way of doing it?

    I really don't want to migrate because like I said, it's a mess but will this method be ok?

    The DNS Server also runs DHCP and is the Schema master. We are basically replacing 2 IMB servers which share all the roles with 1 Dell. We already have another Server 2012 DC on the network so the forst update has been done.

    Thanks in advance for any advice/suggestions, etc.

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    chazzy2501's Avatar
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    you could turn on DNS scavenging this would clean it up over the next week. (with default settings)

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    Hi,

    I have tried that in the past, just doesn't seem to work despite having everything set up as per the MS guidance.

    I'd rather just start fresh proving it wont do any harm.

    Cheers

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    As said above turn on your scavenging. Trim the times down. You won't see and results straight away. Check the DNS event logs and you will see that scavenging is working and you will see how many are removed. I would start over a fresh on the new server. Remember that dhcp and all static IPs will still point their dns to the old server!

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    Especially if you have devices that are non windows.

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    Is your DNS Zone configured as AD integrated or is it a standalone zone?

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