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Home » Microsoft » Windows Server » Active Directory » Why...Switch From AD Mixed to Native Mode?
Why...Switch From AD Mixed to Native Mode? [message #160320] Mon, 24 August 2009 16:45 Go to next message
batfish  is currently offline batfish
Messages: 5
Registered: August 2009
Junior Member
I have read many threads in the forum discussing how to go about switching
from Active Directory Mixed to Native mode.

But...I have not been able to discern why to do it. What are the
advantages/disadvantages.

My environment is as follows.

I have one NT member server outside of my LAN in a DMZ.

I am about to remove via DCPROMO my last two W2K AD domain controllers
leaving one master W2K3 Domain controller.

This W2K3 AD Server runs DNS and DHCP.

I have one W2K8 member server.

I have 6 other new W2K3 member servers.

One is running SQL 2005 server and another my Exchange 2K3 server.

I will not make either one of these servers a Domain controller because it
is not a good practice to.

I understand that it is a best practice to have at least one or two AD
domain controllers for replication of the schema.

I have 23 W2K pro and 70 WinXP Sp2 workstations.

So my questions are,
1) why change to native?
2) promote one or 2 of the new W2K3 servers before I demote the w2k servers
3) do I need to remain in mixed mode to support the W2K workstations
4) do I need to be concerned about the WINNT box at all since it is a member
server not authenticating or participating in AD.
5) should I involve the w2k8 server in any way.

Thanks in advance for your answers.

Robert.
Re: Why...Switch From AD Mixed to Native Mode? [message #160322 is a reply to message #160320] Mon, 24 August 2009 16:56 Go to previous messageGo to next message
Marcin  is currently offline Marcin  United States
Messages: 273
Registered: July 2009
Senior Member
It sounds like you should consider not just switching from mixed to native
mode but moving to Windows Server 2003 forest/domain functional level.

1) for the comprehensive overview of benefits associated with raising
functional levels, refer to
http://technet.microsoft.com/en-us/library/cc738038(WS.10).aspx
2) yes - to provide redundancy
3) no
4) sounds like this is a stand-alone - rather than member - server -
correct? If so, I'm not aware of any specific concerns...
5) Windows Server 2008-based member server can operate properly in a Windows
Server 2003-based domain...

hth
Marcin

"batfish" <batfish@discussions.microsoft.com> wrote in message
news:19A8CE79-0613-43E6-BA8B-6AB197B8A6C2@microsoft.com...
>I have read many threads in the forum discussing how to go about switching
> from Active Directory Mixed to Native mode.
>
> But...I have not been able to discern why to do it. What are the
> advantages/disadvantages.
>
> My environment is as follows.
>
> I have one NT member server outside of my LAN in a DMZ.
>
> I am about to remove via DCPROMO my last two W2K AD domain controllers
> leaving one master W2K3 Domain controller.
>
> This W2K3 AD Server runs DNS and DHCP.
>
> I have one W2K8 member server.
>
> I have 6 other new W2K3 member servers.
>
> One is running SQL 2005 server and another my Exchange 2K3 server.
>
> I will not make either one of these servers a Domain controller because it
> is not a good practice to.
>
> I understand that it is a best practice to have at least one or two AD
> domain controllers for replication of the schema.
>
> I have 23 W2K pro and 70 WinXP Sp2 workstations.
>
> So my questions are,
> 1) why change to native?
> 2) promote one or 2 of the new W2K3 servers before I demote the w2k
> servers
> 3) do I need to remain in mixed mode to support the W2K workstations
> 4) do I need to be concerned about the WINNT box at all since it is a
> member
> server not authenticating or participating in AD.
> 5) should I involve the w2k8 server in any way.
>
> Thanks in advance for your answers.
>
> Robert.
Re: Why...Switch From AD Mixed to Native Mode? [message #160333 is a reply to message #160320] Tue, 25 August 2009 00:04 Go to previous messageGo to next message
meiweb(nospam)  is currently offline meiweb(nospam)  Germany
Messages: 1307
Registered: July 2009
Senior Member
Hello batfish,

1. sounds you are talking about functional levels, see here about all available
options, including 2008 R2
http://technet.microsoft.com/en-us/library/cc771132(WS.10).aspx
2. do it for failover and redundancy, also make them DNS and Global catalog
server
3. no, functional levels belong to the Domain controllers only
4. as a member server in the domain it will work
5. 2008 as member servers will work without any problem, for 2008 DCs you
have to upgrade the forest/domain before with adprep commands


Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm


> I have read many threads in the forum discussing how to go about
> switching from Active Directory Mixed to Native mode.
>
> But...I have not been able to discern why to do it. What are the
> advantages/disadvantages.
>
> My environment is as follows.
>
> I have one NT member server outside of my LAN in a DMZ.
>
> I am about to remove via DCPROMO my last two W2K AD domain controllers
> leaving one master W2K3 Domain controller.
>
> This W2K3 AD Server runs DNS and DHCP.
>
> I have one W2K8 member server.
>
> I have 6 other new W2K3 member servers.
>
> One is running SQL 2005 server and another my Exchange 2K3 server.
>
> I will not make either one of these servers a Domain controller
> because it is not a good practice to.
>
> I understand that it is a best practice to have at least one or two AD
> domain controllers for replication of the schema.
>
> I have 23 W2K pro and 70 WinXP Sp2 workstations.
>
> So my questions are,
> 1) why change to native?
> 2) promote one or 2 of the new W2K3 servers before I demote the w2k
> servers
> 3) do I need to remain in mixed mode to support the W2K workstations
> 4) do I need to be concerned about the WINNT box at all since it is a
> member
> server not authenticating or participating in AD.
> 5) should I involve the w2k8 server in any way.
> Thanks in advance for your answers.
>
> Robert.
>
Re: Why...Switch From AD Mixed to Native Mode? [message #160339 is a reply to message #160320] Tue, 25 August 2009 06:41 Go to previous message
pbbergs  is currently offline pbbergs  United States
Messages: 1024
Registered: July 2009
Senior Member
Inline

--
Paul Bergson
MVP - Directory Services
MCTS, MCT, MCSE, MCSA, Security+, BS CSci
2008, 2003, 2000 (Early Achiever), NT4
Microsoft's Thrive IT Pro of the Month - June 2009

http://www.pbbergs.com

Please no e-mails, any questions should be posted in the NewsGroup This
posting is provided "AS IS" with no warranties, and confers no rights.

"batfish" <batfish@discussions.microsoft.com> wrote in message
news:19A8CE79-0613-43E6-BA8B-6AB197B8A6C2@microsoft.com...
>I have read many threads in the forum discussing how to go about switching
> from Active Directory Mixed to Native mode.
>
> But...I have not been able to discern why to do it. What are the
> advantages/disadvantages.
>
> My environment is as follows.
>
> I have one NT member server outside of my LAN in a DMZ.
>
> I am about to remove via DCPROMO my last two W2K AD domain controllers
> leaving one master W2K3 Domain controller.
>
> This W2K3 AD Server runs DNS and DHCP.
>
> I have one W2K8 member server.
>
> I have 6 other new W2K3 member servers.
>
> One is running SQL 2005 server and another my Exchange 2K3 server.
>
> I will not make either one of these servers a Domain controller because it
> is not a good practice to.
>
> I understand that it is a best practice to have at least one or two AD
> domain controllers for replication of the schema.
>
> I have 23 W2K pro and 70 WinXP Sp2 workstations.
>
> So my questions are,
> 1) why change to native?
All depends on what you need for functionality. Why upgrade from
anything, it is what level of service you need. Others have already pointed
out the new features.
> 2) promote one or 2 of the new W2K3 servers before I demote the w2k
> servers
Always have a t a MINIMUM 2 dc's in each domain
> 3) do I need to remain in mixed mode to support the W2K workstations
No
> 4) do I need to be concerned about the WINNT box at all since it is a
> member
> server not authenticating or participating in AD.
Just be aware of the NT extensions if you are having troubles with
NT
http://support.microsoft.com/kb/288358
> 5) should I involve the w2k8 server in any way.
Is there any feature within 2008 you need? 2008 provides RODC
features, R2 provides the AD recycle bin
>
> Thanks in advance for your answers.
>
> Robert.
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