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Time Server

Posted on 2008-10-14
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Last Modified: 2012-05-05
I have configured my PDC emulator at the root of my domain forest as a time server.  This is the DC for my top parent domain.  Now there is a specific server in a child domain in my forest that does not need to synchronize with my time server for very specific reason.  How do I prevent this server from synchronizing with my time server?
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Question by:virtech
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16 Comments
 
LVL 59

Expert Comment

by:Darius Ghassem
ID: 22711747
Each domain including child domains have a PDC. Each domain will need to be configured so the clients will get time from their PDC. Now if you want your child domain to get it's time from the root domain's PDC then you need to configure those settings but if you want the child domain PDC to get it's time from another time source then you need to configure that too.
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Author Comment

by:virtech
ID: 22711837
After researching this issue I configured my PDC on the forest as the time server.  As I understood this was the superior approach as opposed to configuring each PDC on the child domains as time servers for their particular domains.  Now every client, or server for that matter, that logs into domain forest gets synchronized with top forest DC.  What I am looking for is a quick solution so one particular server from child domain stops getting time from time server.  Is there a way to stop this service on that server? This server needs to have its own time and not get it from time server.  Looking for this solution as opposed to reconfiguring my whole design.  Plus I like the idea of one exact time for all clients on the network.
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LVL 59

Expert Comment

by:Darius Ghassem
ID: 22711897
I agree with how you have the design. Now you want to change to one server or one PDC to use another time source other then your root domain's PDC, right? Then you would just configure that server's registry settings as you did for the root PDC.  
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Author Comment

by:virtech
ID: 22711995
Thanks darius.  As I understand your solution I can:

1. Configure PDC of child domain as time server of that domain and this should work regardless of configuration made at top parent domain.

2. This is the option I really want: Stop one specific server from synchronizing with current time server without configuring different time server for child domain.  Is there a way to prevent one sever from getting time from time server?  
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LVL 59

Expert Comment

by:Darius Ghassem
ID: 22712164
Yes, you can configure that server to get it's time from somewhere else or from it's BIOS. You configured your PDC to get time from an outside source so you would do the same thing for the server you want to get time from another source.

http://support.microsoft.com/kb/816042

http://support.microsoft.com/kb/314054
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Author Comment

by:virtech
ID: 22712488
Perfect, those are the articles I used to confgure my forest PDC as authoritative time server.  

1.  How do make that specific server get its time from BIOS and not from other source?
2.  Do you think using command "net stop w32time" on specific server and manually changing the time should do the trick?
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LVL 59

Expert Comment

by:Darius Ghassem
ID: 22712899
No, that won't do the trick. Why do you want to have one server with a different time then any other server or PC on the network?
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Author Comment

by:virtech
ID: 22713093
Server runs application that needs to be delayed 50 minutes compared to time server.  If that does not work, how do I configure that specific server not to synchronize with time server?  
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LVL 59

Expert Comment

by:Darius Ghassem
ID: 22713193
This is how you would do what you want to do but you will get warnings about the time not being sync with a reliable time source.

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry entry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Config\
3. In the right pane, right-click AnnounceFlags, and then click Modify.
4. In the Edit DWORD Value dialog box, under Value data, type 5, and then click OK.
5. Enable NTPServer.a.  Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpServer\
b.  In the right pane, right-click Enabled, and then click Modify.
c.  In the Edit DWORD Value dialog box, type 1 under Value data, and then click OK.
 
6. Exit Registry Editor.
7. At the command prompt, type the following command to restart the Windows Time service, and then press ENTER:
net stop w32time && net start w32time


http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/Windows_2003_Active_Directory/Q_22820718.html
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Author Comment

by:virtech
ID: 22713748
Are these changes to be applied on specific server which I do not want to synchronize with current time server?
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LVL 59

Expert Comment

by:Darius Ghassem
ID: 22713807
Yes, sorry about that. These need to be applied the server you don't want domain time sync.
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Author Comment

by:virtech
ID: 22713815
Please keep in mind that this server is just a member server in the child domain.
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LVL 59

Accepted Solution

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Darius Ghassem earned 2000 total points
ID: 22713844
I know.
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Author Closing Comment

by:virtech
ID: 31505910
Excelent answer
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Author Comment

by:virtech
ID: 22715794
Excellent answer
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Author Comment

by:virtech
ID: 22715798
r
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