Re: How to migrate existing domain controler
- From: Meinolf Weber [MVP-DS] <meiweb(nospam)@gmx.de>
- Date: Wed, 3 Jun 2009 10:09:53 +0000 (UTC)
Hello Alexfoo,
If any problems occur use this posting again. So anybody can follow the complete story.
Best regards
Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers no rights.
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Thanks for your response.
I'm gonna migrate my DCs following your advices.
Regards,
"Meinolf Weber [MVP-DS]" wrote:
Hello Alexfoo,
Before starting run replmon from the run line or repadmin
/showrepl(only if more then one DC exist), dcdiag /v and netdiag /v
from the command prompt on the old machine to check for errors, if
you have some post the complete output from the command here or solve
them first. For this tools you have to install the
support\tools\suptools.msi from the 2003 installation disk.
Upgrade on the schema master with an account of the schema
admins/enterprise admins with adprep /forestprep, adprep /domainprep
and adprep /rodcprep to version 44 from the 2008 installation disk.
With new hardware and having additional DC's keeping the names is not
a problem. Go DC by DC and remove one of the old machines from the
domain with dcpromo, wait for replication to all other DCs and then
remove it from AD UC computers container, where it will be moved to
after demoting. Then cleanup AD sites and services from the DC name
and check that all entries in DNS server/zone properties and in the
zone structure is removed. Again wait for replication between all
DCs.
Now you can use the same name to add the 2008 machine to the domain
and promote it as additional DC.
After every major step run the support tools again to make sure no
errors exist.
Then make the new DCs Global catalog server and move the 5 FSMO roles
to
one of the 2008 DCs, they should always be on the newest OS version,
when
the PDCEmulator is moved to 2008 a new security group will be created
for
example.
If you are ready with the installation part use again the support
tools.
Netdiag.exe is not included within 2008, but you can copy the 2003
version to it and it works fine on 2008.
With new hardware and fresh install look forward and use 64bit
version, MS will go with the new server versions step by step to
64bit, as already done with SBS/EBS 2008, Exchange 2007, 2008 R2.
When you are not planning to use IPv6 i suggest to disable it
complete:
http://blogs.dirteam.com/blogs/paulbergson/archive/2009/03/19/disabli
ng-ipv6-on-windows-2008.aspx
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
Hi,
First thanks for your quick reply.
Yes I will have new hardware. And I want to keep the names
(otherwise I just add new DC to the domain and dismount the old one)
Actually we have one forest in 2003 native.One DC in 2008 servers
that
host
all the roles, but wihout DNS and DHCP.
Different physical sites with 2 domain controllers on each that are
defined
as well logically in "Sites and services". The replication
configuration
trough each site is pretty simple and work fine.
The DCs are 2003 Servers R2 SP2 32bits and are part of the
replication
of the principale site.
If possible I want to migrate them to Windows 2008 x64. But if it's
add a big amout of work it's no use because x64 is not really needed
on a DC (my opinion).
Thanks !
"Meinolf Weber [MVP-DS]" wrote:
Hello Alexfoo,
Do you have new hardware or do you need to use the same hardware?
Will you keep the server names or can they be different? What OS
architecture do you have and what will be 2008, 32bit or 64bit?
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
Hello,
I'm lookin for a best practices that is the closest from my
needed.
I got two domain controllers on old hardware servers that I need
to
migrate
to knew hardware servers. These two DCs are also DNS, DHCP.
The good thing is that they haven't any FSMO roles or other roles,
all
roles are on other server. All the Forest and Domain are 2003
Native.
All thread on DC servers talk about migration on other domain or
forest. This is not what I'm looking for.
In the same time I wonders if it's possible to migrate them to
Windows 2008 server. Actually they are 2003 R2 SP2.
If you know a best practice that is close from what I'm looking
for... I know it's something that seems easy but I don't want to
miss something.
Thanks in advance.
.
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