> Hello Bad,
>
> 1. No, if you have more then one DC, you will be fine, that's the minimum
> you should have. Also if you take out the old OS DC's you can raise the
> Forest/domain functional levels and use the new options that come with
> 2008 like fine grained password policies for example.
>
> 2. Even if you chang ethe ip addresses the clients will not notify if you
> reconfigure the scope options of the DHCP server and the other fixed
> settings in your domain.
>
> 3. For DHCP also the clients shouldn't notice anything, especially if the
> machines are shutdown. If they are running they will obtain a new lease
> after the half lease time you configured in your DHCP server, so latest
> then they will get the new/updated configuration.
>
> See here for upgrading:
> !!!NEVER START BEFORE HAVING CREATED AND TESTED A BACKUP OF YOUR
> DATA/MACHINE!!!
>
>
> - 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 /showrepl, 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 2003 installation disk.
>
> - run adprep /forestprep and adprep /domainprep and adprep /rodcprep from
> the 2008 installation disk against the 2003 schema master, with an account
> that is member of the Schema admins, to upgrade the schema to the new
> version (44), you can check the version with "schupgr" in a command
> prompt.
>
> - 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 2008 server to an existing
> domain, make it also Global catalog.
>
> - if you are prompted for DNS configuration choose Yes. If not, install
> DNS role after promotion.
>
> - 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 (copy the netdiag from the 2003 to 2008, will
> work) on both domain controllers
>
> - Transfer, NOT seize the 5 FSMO roles to the new Domain controller
> (
http://support.microsoft.com/kb/324801 applies also for 2008)
>
> - 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 2008 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 for 2008 choose "netshell dhcp
> backup" and "netshell dhcp restore" command
> (
http://technet.microsoft.com/en-us/library/cc772372.aspx)>
>
> Demoting the old DC
>
> - 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 promotion
>
> 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 two windows 2003 domain controllers that are dns, dhcp, wins,
>> and print servers. I would like to put 2 new domain controllers in
>> with new hardware and make them windows 2008 domain controllers. I
>> would to put dns, dhcp, and wins on the new domain controllers and
>> leave the old domain controllers as print servers only. My questions
>> are:
>>
>> 1. is there any reason why I should not demote the two old domain
>> controllers after I have 2008 domain controllers (backup purposes etc)
>> 2. If i use the current DC ip addresses for the new DC's will my
>> clients
>> notice anything?
>> 3. if i backup and restore the DHCP datbase to the new 2008 DC's are
>> client
>> leases restored. Will users notice anything the next time they log
>> in?
>
>