Question on ADPREP

We I have a domain with several W2000 and W2003 servers. When attempting to run dcpromo on a new W2003 server, a message appears stating the need to run ADPREP. When attempting to run ADPREP (the new version from R2) from this server, it tells me ADPREP cannot be run from this platform because it is not a domain controller. I brought up the other W2003 servers a while back and thought I ran ADPREP on them at the time. What am I doing wrong here?

Thanks
alank2Asked:
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Jay_Jay70Commented:
with windows 2003 R2 (release 2) you will need to run the adprep tools from the second cd supplied in the 2 cd set!

\CMPNENTS\R2\ADPREP

you can also download here
http://www.microsoft.com/downloads/details.aspx?familyid=5B73CF03-84DD-480F-98F9-526EC09E9BA8&displaylang=en

this boosts the schema up to cope with R2 functionality
http://www.microsoft.com/windowsserver2003/r2/whatsnewinr2.mspx
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Lee W, MVPTechnology and Business Process AdvisorCommented:
You need to run ADPREP /FORESTPREP and ADPREP /DOMAINPREP on the DOMAIN CONTROLLERS.  Then you need to run the R2 ADPREP /FORESTPREP
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Jay_Jay70Commented:
Hi alank2,

to clarify that, you only need to run adprep /forestprep once on your domain controller and then adprep /domain prep after it. you also need to run adprep /gpprep for R2 installs

make sure you are running from the second cd
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alank2Author Commented:
We have 6 servers, all domain controllers. Of these, 3 are W2003, 3 are W2000. The server in question is a new unit with R2 and will be the 7th system. The plan is to move them all to W2003 eventually either by replacing the servers or installing a fresh copy of W2003.

So then do we need to run the ADPREP on each one of them since they are all DCs? Also, does anyone have an opinion on R2 for W2003?

Thanks

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Lee W, MVPTechnology and Business Process AdvisorCommented:
How many sites do you have?

You are preparing Active Directory - NOT the domain controllers - but the command must be run on a domain controller.  You run it once and give time for the changes to replicate to all your domain controllers.

If you don't have 4+ sites, you have TOO MANY domain controllers - it's inefficient to have more than 2 per site.

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alank2Author Commented:
There is 1 site, or domain and all servers are part of that domain. I kept them as DCs because of the physical location of the systems. 4 of the servers are physically located in other places (cities and states) with each location having a server. The 3 other servers are located in the main location's computer room. I should have been more specific in my description of the layout. Do you believe there are to many DCs in this arrangement?

Thanks
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Jay_Jay70Commented:
you "should" have sites set up in AD for your physical sites, but its not exactly crucial, as long as you run adprep tools on your DC holding the schema master and give it time, you will be fine
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alank2Author Commented:
How do you find the schema master?
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Lee W, MVPTechnology and Business Process AdvisorCommented:
A site is a location, not a domain.  You want to have 2 DCs in your main office/largest site and 1-2 DCs in each additional site.

R2 is fine - it has some really good features to it.
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alank2Author Commented:
Just wanted to give an update on this situation. ADPREP was run on all the W2000 servers. The problem I am having is with a new W2003R3 server. Can't get it to join the domain because it says ADPREP needs to be run.
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Jay_Jay70Commented:
as mentioned right up the top :P
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