Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

What would not be available if I bring down my main DC? I do have a secondary one running.

Posted on 2011-02-14
5
341 Views
Last Modified: 2012-08-13
Hello,
 After hours I need to bring down my virtual main domain controller for about 10 minutes. I do have a secondary one running with ADUC and DNS but not DHCP. Can you forsee any problems happening? Client computers get their DNS server IP's from the DHCP server that resides on the one I'm going to take down.
Server 2008
Thanks all,
BW
0
Comment
Question by:bwinkworth
  • 3
5 Comments
 
LVL 57

Assisted Solution

by:Mike Kline
Mike Kline earned 200 total points
ID: 34888061
You should add the second DC/DNS server (I'm assuming it is also running DNS) to the DHCP scope for secondary DNS.   Is the second box a GC?  If not make it a GC too.

Those recommendations are more for a real "outage" situation too.  

Thanks

Mike
0
 

Author Comment

by:bwinkworth
ID: 34888078
How can I tell if it is a GC?

Thanks
0
 

Author Comment

by:bwinkworth
ID: 34888088
In the DHCP scope on the main domain controller both DNS servers are listed but this is the machine I'm taking down
0
 
LVL 95

Accepted Solution

by:
Lee W, MVP earned 300 total points
ID: 34888101
For a brief period like that, odds are nothing would happen to the clients.  DHCP leases are auto-renewed at half time so if you have a 1 day lease, they are renewed every 12 hours unless they can't be renewed because the DHCP server is unavailable - then they continue counting down until the full time is expired.

Machines that were OFF or restarted will not get an address when they are powered on though if the DHCP  server is unavailable.

If this isn't SBS, you might look into setting up a split scope - where half your DHCP addresses are assigned to one server the the other half to the other server.  In this way, you avoid IP conflicts and you always have a DHCP server available to service DHCP requests.

Yuo might also want to check on whether the second DC is a Global Catalog and if not, make it one (done in Sites and Services).

Doing these things should make it so that you could be down for a week and not notice it.
0
 

Author Closing Comment

by:bwinkworth
ID: 34888682
Thanks to both of you. I've split up the points accordingly. They are both GC's. I've fixed the problem on the main controller w/o having to down it but I'm still going to do a split scope as both of you recommended.

BW
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

In this article, we will see the basic design consideration while designing a Multi-tenant web application in a simple manner. Though, many frameworks are available in the market to develop a multi - tenant application, but do they provide data, cod…
This article explains the steps required to use the default Photos screensaver to display branding/corporate images
This tutorial will walk an individual through the process of transferring the five major, necessary Active Directory Roles, commonly referred to as the FSMO roles from a Windows Server 2008 domain controller to a Windows Server 2012 domain controlle…
This tutorial will walk an individual through setting the global and backup job media overwrite and protection periods in Backup Exec 2012. Log onto the Backup Exec Central Administration Server. Examine the services. If all or most of them are stop…

840 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question