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How to make a Domain DFS redundant in case the main DC goes down

Hi,
Is there a way to have a Domain DFS redondant by using two domain controllers.
And I don't mean to have every node with two links pointing on two different servers, but have the dfs structure  still be available when a domain controller goes down.

tx!
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SigSupport
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SigSupport
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2 Solutions
 
willettmeisterCommented:
DFS is tied to active directory not a single domain controller.  As long as you are accessing the share correctly you shouldn't have a problem as long as a DC for the domain is available.  

Are you using the following converntion to access your share?  \\mydomain.com\share where mydomain.com is your AD domain.  You should not be using \\dc1.mydomain.com\share.
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Adam BrownSr Solutions ArchitectCommented:
The DFS Namespace is written to the DNS zone, so it is always available as long as it's in a DNS integrated zone and a Domain Controller is up. In order to make the files that are actually being published with the DFS namespace redundant, you would need a second file server and make use of DFS replication. http://technet.microsoft.com/en-us/library/cc778621%28WS.10%29.aspx has information and instructions on getting that set up.
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Adam BrownSr Solutions ArchitectCommented:
sorry, http://technet.microsoft.com/en-us/library/cc776868%28WS.10%29.aspx has instructions on configuring DFS replication.
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SigSupportAuthor Commented:
Thanks for the inputs put I am not convinced. Before I explain my-self I just want to clarify something to acbrown2010. I don't want the files to be redundant, I just want the dfs structure to be redundant. And willettmeister, yes I access using \\mydomain.com\share which is \\domain\masterfolder\.
Here's why I am not convinced. If I open my \\dc1\    I can see my dfs root share called \masterfolder\ and all dfs links under it.
If I open my second dc, the share is not there!
So that's why I believe that if my dc1 goes down, the dfs will all go down.
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Adam BrownSr Solutions ArchitectCommented:
That's because your DC1 is holding the actual share that DFS is pointing to. Basically, if DC1 fails, the DFS namespace of \\mydomain.com\ will remain, but the resources it points to will not be available. DFS Namespaces only allows you to navigate to multiple shares on the network without having to know the name of the server where the share exists. So if you have DC1, FILE1, and FILE2 all sharing files, you can access them from \\mydomain.com\sharename instead of having to know which server your files are located on as well as the share name they are in. The only way to make sure that the files that the DFS Namespace points to are redundant is to enable replication with another server.
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SigSupportAuthor Commented:
Hi acbrown2010,
I am not too sure we understand each other so I will clarify more my setup.
I have 2 domain controllers which holds NO users files.
I have 2 Files Servers which holds all the documents my users needs.
On DC1, under the d drive there is a folder called Masterfolder which has for subfolders exactly all the shares that are located on FilesServer1 and FilesServer2 but it contains absolutely no files, only the root shares of FilesServer1 and Filesserver2 and no sub folders.
So that folder, dc1\d\masterfolder is exactly what I see when I access \\dc1\masterfolder: no sub-folder, no files. In fact, if I click on one of those links I get "\\dc1\d$\Masterfolder\Achat is not accessible. You might not have permission.... The network location cannot be reached..." (p.s. I have all the rights possible).
If I do on my laptop \\dc1\ Enter, I see a share called MasterFolder and when I click on it, I see all links represented in DFS, and when I click on a link it opens the real folder on whatever FilesServer1 or 2.
This is not duplicated on dc2
So to me, it looks like dfc keeps some stuff in AD but need to have a folders representation of all links in that special folder tree.
So, that's why I believe that if dc1 goes, I won't be able to access \\mydomain.com\MasterFolder.
And like I said, I am not looking to make sure the FILES that the DFS Namespace points to are redondant, I only looking at have the DFS Namespace redondant.
tx!
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willettmeisterCommented:
If the folders aren't dupplicated on DC2 then the links are broken and therefore will not show up correctly when you browse DC2 directly.  You will need to replicate at least the folder structure to have that work.
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SigSupportAuthor Commented:
Replicate using what tool?
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willettmeisterCommented:
If you are using Windows 2003 R2 then replication could be handled via DFS-R.  If you are using Windows 2003 then it will use the older nt replication.  Either way you can use DFS administrastion tool to configure the replication.
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SigSupportAuthor Commented:
Mising an how to for the last command, but I can find it.
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