Link to home
Start Free TrialLog in
Avatar of APC_40
APC_40

asked on

Old DC - Requierment to demote it. Questons.....

Hi

I have a DC that's running low on disk space on the C drive, so low that I cannot install SP2 on it. It's a global catalogue server. OS - server 2003.
I need to demote it and leave it as a member server possibly.

I have 4 other DCs listed in AD. This DC is also configured on the clients as their primary DNS server.... DNS is not handed out by DHCP.

Can someone please give me a detiled run down on the correct produre on how to gracefully demote this DC wihtout causing any user downtime, etc. I'm quite happy with DCPROMPO and unchecking it as a global catalogue server but I would like a description on any other steps I should take.

Cheers
ASKER CERTIFIED SOLUTION
Avatar of Brian Pierce
Brian Pierce
Flag of United Kingdom of Great Britain and Northern Ireland image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Hi

To make this properly, you can do theses actions :

1/ check FSMo roles : netdom query fsmo to be sure that your server isn't into the list. If it's the case, switch the fsmo role concerned on an other DC
2/ check your DNS configuration. Be sure that your workstations don't use this server as DNS server. If it's the case, change the DNS server on clients and on your your DHCP scope
3/ Deactivate the "role" Global Catalog"
4/ Reboot the server
5/ Execute dcpromo to demote ActiveDirectory properly. When you are here, pay attention and don't check that this server is the lastest server in the forest
6/ Reboot and that's finish

Regards
Avatar of APC_40
APC_40

ASKER

Excellent  - thanks for the detailed replies.

What is the dll  - regsvr32 schmmgmt.dll? What is it used for?

The guide provided detail a 2003  - 2008 migration. Can you please provide a link or the steps (if they are different) on how to transfer the DC's roles?
Hi

to transfert the FSMO roles, you can use the include tool "ntdsutil.exe"
Check this microsoft KB to know how to use this tool : Using ntdsutil.exe to transfer or seize FSMO roles

Regards
Avatar of APC_40

ASKER

Thanks for the replies, so far....


The clients also have this DC as their primary DNS server: Will one the existing DCs have to be configured to use the same IP addresss?

The DC is also the DHCP server. Will this have to be migrated to another server or will this be suitable to leave the DHCP scope on the newly demoted DC (to a member server)

The server also stores the users profiles and user home drives: Is there a way to migrate these in an automated way? The same applies to printers?

Also, what backups of this server will I need in case of any complications and there is a requirement to roll it back?

Cheers
BTW what is the size of your C: ?

I am sure you can recover space on it.

In any case you need space even after you make it a member server.
Avatar of APC_40

ASKER

The C drive has a few hundrew MB left, I want to eventually remvove this server completly, hence my question about moving the profile and shares on it. Can someone please respond to my last question - Many thanks.
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
to complete my last post, use Space Sniffer  to analyse your hardrive space. Easy to use, no install

Regards
Avatar of APC_40

ASKER

Cheers everyone.