Re: Migrating from 2000 to 2003

Hello SPD0060,

Do NOT promote a SQL server to DC. Running SQL on a DC is not recommended,
the Domain Controller Security policy now applies to the machine in addition
to the local policies, which can stop SQL responding and will lower security
either for SQL or for the DC itself. Run SQL on a dedicated member server.

Domain controllers should always do there basic job, AD/DNS/GC and maybe
DHCP, that's it. Also you should always have 2 of them for failover and redundancy.

With the above in mind, add a NEW machine to the existing domain according
to the following description, that way you can keep the 2000 DC as additional
one and SQL is still on member server:
!!!NEVER START BEFORE HAVING CREATED AND TESTED A BACKUP OF YOUR DATA/MACHINE!!!

One additional question:
Is the old server also Exchange server and will it be taken out of the domain
forever, when the new server is running?

- On the old server open DNS management console and check that you are running
Active directory integrated zone (easier for replication, if you have more
then one DNS server)

- run replmon from the run line or repadmin /showreps (only if more then
one DC exist), dcdiag and netdiag 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 2000 or 2003 installation disk.

- run adprep /forestprep and adprep /domainprep from the 2003 installation
disk against the 2000 server, with an account that is member of the Schema
admins, to upgrade the schema to the new version

- Install the new machine as a member server in your existing domain

- configure a fixed ip and set the preferred DNS server to the old DNS server
only

- run dcpromo and follow the wizard to add the 2003 server to an existing
domain

- if you are prompted for DNS configuration choose Yes (also possible that
no DNS preparation occur), then install DNS after the reboot

- for DNS give the server time for replication, at least 15 minutes. Because
you use Active directory integrated zones it will automatically replicate
the zones to the new server. Open DNS management console to check that they
appear

- if the new machine is domain controller and DNS server run again replmon,
dcdiag and netdiag on both domain controllers

- if you have no errors, make the new server Global catalog server, open
Active directory Sites and Services and then double-click sitename, double-click
Servers, click your domain controller, right-click NTDS Settings, and then
click Properties, on the General tab, click to select the Global catalog
check box (http://support.microsoft.com/?id=313994)

- Transfer, NOT seize the 5 FSMO roles to the new Domain controller (http://support.microsoft.com/kb/324801)

- you can see in the event viewer (Directory service) that the roles are
transferred, also give it some time

- reconfigure the DNS configuration on your NIC of the 2003 server, preferred
DNS itself, secondary the old one

- if you use DHCP do not forget to reconfigure the scope settings to point
to the new installed DNS server

- export and import of DHCP database (if needed) (http://support.microsoft.com/kb/325473)

- backup WINS (http://technet.microsoft.com/en-us/l.../cc727901.aspx)

- restore WINS (http://technet.microsoft.com/en-us/l.../cc727960.aspx)


Demoting the old DC (if needed)

- reconfigure your clients/servers that they not longer point to the old
DC/DNS server on the NIC

- to be sure that everything runs fine, disconnect the old DC from the network
and check with clients and servers the connectivity, logon and also with
one client a restart to see that everything is ok

- then run dcpromo to demote the old DC, if it works fine the machine will
move from the DC's OU to the computers container, where you can delete it
by hand. Can be that you got an error during demoting at the beginning, then
uncheck the Global catalog on that DC and try again

- check the DNS management console, that all entries from the machine are
disappeared or delete them by hand if the machine is off the network for ever

- also you have to start AD sites and services and delete the old servername
under the site, this will not be done during demotion

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 a small network (25 users) running XP on a 2000 domain
> controller. I'll be installing all new 2007 desktops and want to
> upgrade an existing 2003 server (currently running only as a sql
> server) to be the PDC. IHave to do all this while keeping existing
> desktops running (installing one new PC at a time). I'm far from an
> expert at this so my plan may be somewhat stupid and that's why I'd
> like a critique. I also have VOIP phones running off a separate linux
> box but using the dns of the old 2000 server. All exisiting print
> queues are also on the 2000 serevr.
>
> I thought I would setup a new domain on the 2003 server (this machine
> has dual quad cores for plenty of power) but not enable dhcp
> immediately.
>
> Add each new PC to the new domain.
>
> Once all new PCs are installed I then move DHCP to the new server and
> turn it off or reconfigure it on the old.
>
> Demote the old server to file server status or - Is there a way to
> have a 2000 server be a backup DC for a 2003 domain?
>
> I'm sure I've missed something, any thoughts would be immensely
> appreciated.
>
> Thanks,
> Shawn