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Simultaneous AD 2000 & 2003

Author
4 Apr 2005 6:15 PM
Diane Alsing
After reading the question I posted below - I was even confused - so this is
really what I want to get at.

I have Windows Server 2000 deployed with AD.  I have added a Windows Server
2003 to the network in hopes of one day promoting it to be the primary domain
controller.  My question is, should I install the AD on the 2003 Server also,
and if I do, will it duplicate the info from the 2000 Server?  I believe I
understood that if I did this, the 2003 Server would be the secondary
controller & would promote itself should the primary server go down.

Thank you.

Author
4 Apr 2005 6:49 PM
Desmond Lee
W2k3 Server can be a normal member server in the W2k AD environment. It can
also be made a DC but new features will not be available until all W2k DCs
have been upgraded (to W2k3 - W2k3 "functional" forest / domain level).

Moving to a complete W2k3 based AD infrastructure requires several
preparatory tasks (/forestprep, /domainprep) that belong to good planning and
design.

Hope this helps to clarify matters. Do let us know. Thanks.


Show quoteHide quote
"Diane Alsing" wrote:

> After reading the question I posted below - I was even confused - so this is
> really what I want to get at.
>
> I have Windows Server 2000 deployed with AD.  I have added a Windows Server
> 2003 to the network in hopes of one day promoting it to be the primary domain
> controller.  My question is, should I install the AD on the 2003 Server also,
> and if I do, will it duplicate the info from the 2000 Server?  I believe I
> understood that if I did this, the 2003 Server would be the secondary
> controller & would promote itself should the primary server go down.
>
> Thank you.
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Author
4 Apr 2005 7:15 PM
Diane Alsing
I currently only have 1 DC Windows Server 2000 with other 2000 Servers on the
network.

I just want to verify - Can I ad the new 2003 server as a DC (in addition to
the 2000) without upgrading the 2000 DC Server?  I think I understand that I
can by doing the following (if you could just verify for me ;-)

1 - disconnect Windows Server 2000 from network
2 - run adprep/forestprep
3- if no errors, I should be able to add Windows Server 2003 as additional DC

This will not have all features of 2003 until the 2000 server is upgraded.

Will this replicate the 2000 Server?

Then, to upgrade the 2000 to 2003, all I should now have to do is back-up
the 2000 DC Server & install the software?

Show quoteHide quote
"Desmond Lee" wrote:

> W2k3 Server can be a normal member server in the W2k AD environment. It can
> also be made a DC but new features will not be available until all W2k DCs
> have been upgraded (to W2k3 - W2k3 "functional" forest / domain level).
>
> Moving to a complete W2k3 based AD infrastructure requires several
> preparatory tasks (/forestprep, /domainprep) that belong to good planning and
> design.
>
> Hope this helps to clarify matters. Do let us know. Thanks.
>
>
> "Diane Alsing" wrote:
>
> > After reading the question I posted below - I was even confused - so this is
> > really what I want to get at.
> >
> > I have Windows Server 2000 deployed with AD.  I have added a Windows Server
> > 2003 to the network in hopes of one day promoting it to be the primary domain
> > controller.  My question is, should I install the AD on the 2003 Server also,
> > and if I do, will it duplicate the info from the 2000 Server?  I believe I
> > understood that if I did this, the 2003 Server would be the secondary
> > controller & would promote itself should the primary server go down.
> >
> > Thank you.
Author
4 Apr 2005 8:17 PM
Allen Firouz
Diane,

First off, a clarification:  In AD, there are no BDC's.  All DC's are on the
same level!
Now, based on your environment, you can install Win2003 server in your 2000
AD, then DCpromo it and make it a DC on your existing 2000 AD.  This would
make your AD "2003 Mixed Mode".  When you introduce the 2003 DC, AD will
automatically replicate the directory and Sysvol to the new server.  You
should NOT disjoin the 2003 and Dcpromo it, because then you will have 2
separate AD environments and you have to migrate everything from one to the
other.  Add the member server and Dcpromo to make it an "additional DC in an
existing Forest".
Now, to upgrade fully, you move the FSMO roles to the 2003 DC and upgrade
the remaining DC's to 2003 as well.  Once all your DC's (not member servers)
are 2003, flip the bit and make it a 2003 Native Mode (ADS&S > Domain right
click and elevate domain mode).
This link willl help a lot:
http://www.microsoft.com/windowsserver2003/evaluation/whyupgrade/win2k/w2ktows03-2.mspx
and this for additional iinfo: http://support.microsoft.com/kb/325379

-Allen Firouz


Show quoteHide quote
"Diane Alsing" wrote:

> I currently only have 1 DC Windows Server 2000 with other 2000 Servers on the
> network.
>
> I just want to verify - Can I ad the new 2003 server as a DC (in addition to
> the 2000) without upgrading the 2000 DC Server?  I think I understand that I
> can by doing the following (if you could just verify for me ;-)
>
> 1 - disconnect Windows Server 2000 from network
> 2 - run adprep/forestprep
> 3- if no errors, I should be able to add Windows Server 2003 as additional DC
>
> This will not have all features of 2003 until the 2000 server is upgraded.
>
> Will this replicate the 2000 Server?
>
> Then, to upgrade the 2000 to 2003, all I should now have to do is back-up
> the 2000 DC Server & install the software?
>
> "Desmond Lee" wrote:
>
> > W2k3 Server can be a normal member server in the W2k AD environment. It can
> > also be made a DC but new features will not be available until all W2k DCs
> > have been upgraded (to W2k3 - W2k3 "functional" forest / domain level).
> >
> > Moving to a complete W2k3 based AD infrastructure requires several
> > preparatory tasks (/forestprep, /domainprep) that belong to good planning and
> > design.
> >
> > Hope this helps to clarify matters. Do let us know. Thanks.
> >
> >
> > "Diane Alsing" wrote:
> >
> > > After reading the question I posted below - I was even confused - so this is
> > > really what I want to get at.
> > >
> > > I have Windows Server 2000 deployed with AD.  I have added a Windows Server
> > > 2003 to the network in hopes of one day promoting it to be the primary domain
> > > controller.  My question is, should I install the AD on the 2003 Server also,
> > > and if I do, will it duplicate the info from the 2000 Server?  I believe I
> > > understood that if I did this, the 2003 Server would be the secondary
> > > controller & would promote itself should the primary server go down.
> > >
> > > Thank you.
Author
4 Apr 2005 8:39 PM
Diane Alsing
I just want to clarify that you are suggesting going to the Windows Server
2000, choosing Active Directory Sites & Services, and adding the new 2003
server name there
Then I should promote it to a domain controller  (not sure how to do this -
??)
Then go to the 2003  server & add AD

(sorry - i'm very new to this)

Show quoteHide quote
"Allen Firouz" wrote:

> Diane,
>
> First off, a clarification:  In AD, there are no BDC's.  All DC's are on the
> same level!
> Now, based on your environment, you can install Win2003 server in your 2000
> AD, then DCpromo it and make it a DC on your existing 2000 AD.  This would
> make your AD "2003 Mixed Mode".  When you introduce the 2003 DC, AD will
> automatically replicate the directory and Sysvol to the new server.  You
> should NOT disjoin the 2003 and Dcpromo it, because then you will have 2
> separate AD environments and you have to migrate everything from one to the
> other.  Add the member server and Dcpromo to make it an "additional DC in an
> existing Forest".
> Now, to upgrade fully, you move the FSMO roles to the 2003 DC and upgrade
> the remaining DC's to 2003 as well.  Once all your DC's (not member servers)
> are 2003, flip the bit and make it a 2003 Native Mode (ADS&S > Domain right
> click and elevate domain mode).
> This link willl help a lot:
> http://www.microsoft.com/windowsserver2003/evaluation/whyupgrade/win2k/w2ktows03-2.mspx
> and this for additional iinfo: http://support.microsoft.com/kb/325379
>
> -Allen Firouz
>
>
> "Diane Alsing" wrote:
>
> > I currently only have 1 DC Windows Server 2000 with other 2000 Servers on the
> > network.
> >
> > I just want to verify - Can I ad the new 2003 server as a DC (in addition to
> > the 2000) without upgrading the 2000 DC Server?  I think I understand that I
> > can by doing the following (if you could just verify for me ;-)
> >
> > 1 - disconnect Windows Server 2000 from network
> > 2 - run adprep/forestprep
> > 3- if no errors, I should be able to add Windows Server 2003 as additional DC
> >
> > This will not have all features of 2003 until the 2000 server is upgraded.
> >
> > Will this replicate the 2000 Server?
> >
> > Then, to upgrade the 2000 to 2003, all I should now have to do is back-up
> > the 2000 DC Server & install the software?
> >
> > "Desmond Lee" wrote:
> >
> > > W2k3 Server can be a normal member server in the W2k AD environment. It can
> > > also be made a DC but new features will not be available until all W2k DCs
> > > have been upgraded (to W2k3 - W2k3 "functional" forest / domain level).
> > >
> > > Moving to a complete W2k3 based AD infrastructure requires several
> > > preparatory tasks (/forestprep, /domainprep) that belong to good planning and
> > > design.
> > >
> > > Hope this helps to clarify matters. Do let us know. Thanks.
> > >
> > >
> > > "Diane Alsing" wrote:
> > >
> > > > After reading the question I posted below - I was even confused - so this is
> > > > really what I want to get at.
> > > >
> > > > I have Windows Server 2000 deployed with AD.  I have added a Windows Server
> > > > 2003 to the network in hopes of one day promoting it to be the primary domain
> > > > controller.  My question is, should I install the AD on the 2003 Server also,
> > > > and if I do, will it duplicate the info from the 2000 Server?  I believe I
> > > > understood that if I did this, the 2003 Server would be the secondary
> > > > controller & would promote itself should the primary server go down.
> > > >
> > > > Thank you.
Author
4 Apr 2005 9:01 PM
Allen Firouz
No!

The links I submitted earlier have the step by step.  Here is the big picture:

1.  Join the new 2003 server to AD as a member server.
2.  DCPROMO and make it a Domain Controller.  (give it time to cook and
synchronize... at least a few hours)
3.  Move FSMO roles to the 2003 server.  Let it cook.
4.  Perform an in-place upgrade of the 2000 AD to 2003. 
5.  Change mode to native!

If you are not familiar with AD, I highly recommend studying up or reading
many of the great white papers on the Microsoft site prior to acting.  This
takes planning and should be done with care with a complete understanding of
the design and consequences. 
I recommend starting here and reading up before you begin:
http://www.microsoft.com/technet/community/columns/profwin/pw0302.mspx
http://www.microsoft.com/technet/prodtechnol/windows2000serv/technologies/activedirectory/plan/bpaddsgn.mspx

-Allen Firouz

Show quoteHide quote
"Diane Alsing" wrote:

> I just want to clarify that you are suggesting going to the Windows Server
> 2000, choosing Active Directory Sites & Services, and adding the new 2003
> server name there
> Then I should promote it to a domain controller  (not sure how to do this -
> ??)
> Then go to the 2003  server & add AD
>
> (sorry - i'm very new to this)
>
> "Allen Firouz" wrote:
>
> > Diane,
> >
> > First off, a clarification:  In AD, there are no BDC's.  All DC's are on the
> > same level!
> > Now, based on your environment, you can install Win2003 server in your 2000
> > AD, then DCpromo it and make it a DC on your existing 2000 AD.  This would
> > make your AD "2003 Mixed Mode".  When you introduce the 2003 DC, AD will
> > automatically replicate the directory and Sysvol to the new server.  You
> > should NOT disjoin the 2003 and Dcpromo it, because then you will have 2
> > separate AD environments and you have to migrate everything from one to the
> > other.  Add the member server and Dcpromo to make it an "additional DC in an
> > existing Forest".
> > Now, to upgrade fully, you move the FSMO roles to the 2003 DC and upgrade
> > the remaining DC's to 2003 as well.  Once all your DC's (not member servers)
> > are 2003, flip the bit and make it a 2003 Native Mode (ADS&S > Domain right
> > click and elevate domain mode).
> > This link willl help a lot:
> > http://www.microsoft.com/windowsserver2003/evaluation/whyupgrade/win2k/w2ktows03-2.mspx
> > and this for additional iinfo: http://support.microsoft.com/kb/325379
> >
> > -Allen Firouz
> >
> >
> > "Diane Alsing" wrote:
> >
> > > I currently only have 1 DC Windows Server 2000 with other 2000 Servers on the
> > > network.
> > >
> > > I just want to verify - Can I ad the new 2003 server as a DC (in addition to
> > > the 2000) without upgrading the 2000 DC Server?  I think I understand that I
> > > can by doing the following (if you could just verify for me ;-)
> > >
> > > 1 - disconnect Windows Server 2000 from network
> > > 2 - run adprep/forestprep
> > > 3- if no errors, I should be able to add Windows Server 2003 as additional DC
> > >
> > > This will not have all features of 2003 until the 2000 server is upgraded.
> > >
> > > Will this replicate the 2000 Server?
> > >
> > > Then, to upgrade the 2000 to 2003, all I should now have to do is back-up
> > > the 2000 DC Server & install the software?
> > >
> > > "Desmond Lee" wrote:
> > >
> > > > W2k3 Server can be a normal member server in the W2k AD environment. It can
> > > > also be made a DC but new features will not be available until all W2k DCs
> > > > have been upgraded (to W2k3 - W2k3 "functional" forest / domain level).
> > > >
> > > > Moving to a complete W2k3 based AD infrastructure requires several
> > > > preparatory tasks (/forestprep, /domainprep) that belong to good planning and
> > > > design.
> > > >
> > > > Hope this helps to clarify matters. Do let us know. Thanks.
> > > >
> > > >
> > > > "Diane Alsing" wrote:
> > > >
> > > > > After reading the question I posted below - I was even confused - so this is
> > > > > really what I want to get at.
> > > > >
> > > > > I have Windows Server 2000 deployed with AD.  I have added a Windows Server
> > > > > 2003 to the network in hopes of one day promoting it to be the primary domain
> > > > > controller.  My question is, should I install the AD on the 2003 Server also,
> > > > > and if I do, will it duplicate the info from the 2000 Server?  I believe I
> > > > > understood that if I did this, the 2003 Server would be the secondary
> > > > > controller & would promote itself should the primary server go down.
> > > > >
> > > > > Thank you.

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