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Home » Microsoft » Windows Server » Active Directory » Taking down down a Domain Controller for a short time
Taking down down a Domain Controller for a short time [message #361984] Thu, 07 January 2010 11:04 Go to next message
tnt  is currently offline tnt
Messages: 51
Registered: September 2009
Member
Hello,

We have three DCs consisting of windows 2003 Ent. I need to relocate one DC
to a different building.

Would taking one DC down have any issues with user who already logged in?
This DC has the FSMO roles. I will take it down for about 15 min.

In the past, I never had any issues. Just thought I ask for opinions. I
noticed in the past where one DC was down, the workstation would reroute to
the other DC for the time server (I was testing the time server back then).

Thanks for your time.
Tnt
Re: Taking down down a Domain Controller for a short time [message #362008 is a reply to message #361984] Thu, 07 January 2010 11:18 Go to previous messageGo to next message
florian  is currently offline florian  Germany
Messages: 484
Registered: July 2009
Senior Member
Howdie!

tnt schrieb:
> We have three DCs consisting of windows 2003 Ent. I need to relocate one DC
> to a different building.
>
> Would taking one DC down have any issues with user who already logged in?
> This DC has the FSMO roles. I will take it down for about 15 min.
>
> In the past, I never had any issues. Just thought I ask for opinions. I
> noticed in the past where one DC was down, the workstation would reroute to
> the other DC for the time server (I was testing the time server back then).

As long as there are other DCs that can service requests
(authentication, DNS, ..) this shouldn't be an issue. Even with the FSMO
roles owned by the machine to-be-moved.

Cheers,
Florian
--
Microsoft MVP - Group Policy
eMail: prename [at] frickelsoft [dot] net.
blog: http://www.frickelsoft.net/blog.
ANY advice you get on the Newsgroups should be tested thoroughly in your
lab.
Re: Taking down down a Domain Controller for a short time [message #362051 is a reply to message #362008] Thu, 07 January 2010 12:09 Go to previous messageGo to next message
tnt  is currently offline tnt
Messages: 51
Registered: September 2009
Member
Thanks for your response.

I forgot off of my head the comannd to determine that:

logonserver to determine the RPC call, etc

"Florian Frommherz [MVP]" wrote:

> Howdie!
>
> tnt schrieb:
> > We have three DCs consisting of windows 2003 Ent. I need to relocate one DC
> > to a different building.
> >
> > Would taking one DC down have any issues with user who already logged in?
> > This DC has the FSMO roles. I will take it down for about 15 min.
> >
> > In the past, I never had any issues. Just thought I ask for opinions. I
> > noticed in the past where one DC was down, the workstation would reroute to
> > the other DC for the time server (I was testing the time server back then).
>
> As long as there are other DCs that can service requests
> (authentication, DNS, ..) this shouldn't be an issue. Even with the FSMO
> roles owned by the machine to-be-moved.
>
> Cheers,
> Florian
> --
> Microsoft MVP - Group Policy
> eMail: prename [at] frickelsoft [dot] net.
> blog: http://www.frickelsoft.net/blog.
> ANY advice you get on the Newsgroups should be tested thoroughly in your
> lab.
> .
>
Re: Taking down down a Domain Controller for a short time [message #362160 is a reply to message #362051] Thu, 07 January 2010 13:58 Go to previous messageGo to next message
aceman  is currently offline aceman  United States
Messages: 5816
Registered: July 2009
Senior Member
"tnt" <tnt@discussions.microsoft.com> wrote in message
news:A70A1CCC-3353-48A7-82DD-6C74E2A09CB6@microsoft.com...
>
> Thanks for your response.
>
> I forgot off of my head the comannd to determine that:
>
> logonserver to determine the RPC call, etc

Or:

echo %logonserver%

Just some advise, it would be better to do this off production hours to
prevent any possible issues.

I put together a blog regarding resolution process and how the client side
resolver handles it. It has a section regarding if a DC goes down, what
happens. Scroll down to that part to see what implications I am referring
to. I hope you find it helpful.

DNS, WINS & the Client Side Resolver, NetBIOS, Browser Service, Disabling
NetBIOS, Direct Hosted SMB (DirectSMB), If One DC is Down, Does a Client
logon to Another DC, and DNS Forwarders Algorithm
http://msmvps.com/blogs/acefekay/archive/2009/11/29/dns-wins -netbios-amp-the-client-side-resolver-browser-service-disabl ing-netbios-direct-hosted-smb-directsmb-if-one-dc-is-down-do es-a-client-logon-to-another-dc-and-dns-forwarders-algorithm .aspx

--
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.

Ace Fekay, MVP, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE &
MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services

If you feel this is an urgent issue and require immediate assistance, please
contact Microsoft PSS directly. Please check http://support.microsoft.com
for regional support phone numbers.
Re: Taking down down a Domain Controller for a short time [message #362556 is a reply to message #361984] Fri, 08 January 2010 03:28 Go to previous messageGo to next message
meiweb  is currently offline meiweb  Germany
Messages: 2225
Registered: September 2009
Senior Member
Hello tnt,

As already said from the others, no problem when a DC/DNS and if you use
universal groups a Global catalog server is available for authentication.
If there is another subnet in use don't forget to adjust AD sites and services
for the new subnet.

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,
>
> We have three DCs consisting of windows 2003 Ent. I need to relocate
> one DC to a different building.
>
> Would taking one DC down have any issues with user who already logged
> in? This DC has the FSMO roles. I will take it down for about 15 min.
>
> In the past, I never had any issues. Just thought I ask for opinions.
> I noticed in the past where one DC was down, the workstation would
> reroute to the other DC for the time server (I was testing the time
> server back then).
>
> Thanks for your time.
> Tnt
Re: Taking down down a Domain Controller for a short time [message #365413 is a reply to message #361984] Mon, 11 January 2010 14:54 Go to previous message
Jorge Silva  is currently offline Jorge Silva
Messages: 398
Registered: July 2009
Senior Member
Hi
When the DC is the owner of the FSMO roles and is at the client's site, you
may have problems during that take off. Perhaps transfer the FSMO roles
before the take off isn't a bad idea, of course, doing this at off time
hours without transfer the FSMO may not be a bad idea as well.

--

I hope that the information above helps you.
Have a Nice day.

Jorge Silva
MVP Directory Services

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.




"tnt" <tnt@discussions.microsoft.com> wrote in message
news:87F0DA23-1669-4AF4-B2DB-E29EA388440E@microsoft.com...
> Hello,
>
> We have three DCs consisting of windows 2003 Ent. I need to relocate one
> DC
> to a different building.
>
> Would taking one DC down have any issues with user who already logged in?
> This DC has the FSMO roles. I will take it down for about 15 min.
>
> In the past, I never had any issues. Just thought I ask for opinions. I
> noticed in the past where one DC was down, the workstation would reroute
> to
> the other DC for the time server (I was testing the time server back
> then).
>
> Thanks for your time.
> Tnt
>
>
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