Windows 2003 AD DNS best practices

We are days away from upgrading our domain to a Windows 2003 Active Directory.  This is how I propose to perform the upgrade

We have the following scenario

1 X NT4 PDC
1 x NT4 BDC

1 x Windows 2003 Server which hosts Pri DNS and which will be the eventual main DC, FSMO master
1 x Windows 2003 Server which hosts Sec DNS and which will be the second DC

I have already created the neccesary zones, namely,
_msdcs.mycompany.co.uk
 _sites.mycompany.co.uk
_tcp.mycompany.co.uk
_udp.mycompany.co.uk
ForestDNSZones.mycompany.co.uk
DomainDNSZones.mycompany.co.uk

all zones support dynamic updates

So, when I upgrade our PDC, DNS setup will complete without a hitch using the existing DNS server.  I will then run dcpromo on the Pri DNS once I am happy with the upgrade.

Anyway, this is my question.  The zones above are all Standard Primary on the Pri DNS server with the Sec DNS Server listed as additional nameserver.  Should I

1) Set up secondary zones on the Sec DNS server then once I have promoted both servers to DCs change the zone types to AD Integrated
2) Leave the zones just residing on the Pri DNS server.  Then, once I have promoted the first server, change the zone type to AD integrated and then promote the second.

I know it probably seems like a very subtle distinction, but I would appreciate some input.
LVL 13
hstilesAsked:
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bbaoConnect With a Mentor IT ConsultantCommented:
agree with rhandels.

FYI, the OFFICIAL bast practice, hehe :)

Best Practice Active Directory Design for Managing Windows Networks
http://www.microsoft.com/technet/prodtechnol/windows2000serv/technologies/activedirectory/plan/bpaddsgn.mspx

Best Practice Methods for Windows 2000 Domain Controller Setup
http://support.microsoft.com/?id=kb;en-us;216899

hope it helps,
bbao
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rhandelsConnect With a Mentor Commented:
Hi,

I would say use the second option, this will make your live easier. If the first DNS server works and you make it AD integrated, then you're sure the second will also work (because of AD integration). If something goes awire on you in option 1, you have a big problem..

Only thing to take into account (not sure if this is necesarry though), i would delete the secondary DNS zone from the other DC, else you might get conflicts because it has a secondary zone and needs to be AD integrated..
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hstilesAuthor Commented:
Extra point sfor bbao for those handy links
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