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DFS Folder sharing

Posted on 2014-10-03
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Last Modified: 2015-01-27
Hi,

I have setup DFS on two servers. They are Replicating to each other and I can seen them both on the client network share. They are published in the Namespace via the Replication.

the name space is : domain.local\data\

However, the clients can both open a file at the same time and its the first one to save wins.

How can I stop this.

I wanted to have redundancy for the file server and thought DFS was the way to go.
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Question by:Gareth_Pointon
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by:Cliff Galiher
ID: 40359052
You can't stop this. DFS does not support file locks across the entire namespace. DFS-Replication has a place, but it was not meant to be a replacement for fileserver clusters, nor can it be used as such. You can certainly use it for redundancy, but you *cannot* use it for high availability. If you want to use it for redundancy then you'll simply remove one of the targets from the DFS Namespace so all clients get the same server reference and thus file locks will prevent simultaneous editing. In the event of a failure, you manually change the namespace target to point to the other replication target and the only data loss would be changes made since the last replication.

Yes, it is a manual failover process. But it works. And, again, if you want true high availability (aka automatic failover) then DFS is not the right solution. That's what clustering is for.
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by:Gareth_Pointon
ID: 40359107
OK.. However could I not tell it to use the 01 server as the Priority server within the Shared Targets by setting the override referral ordering?
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by:Cliff Galiher
ID: 40359141
You still run the risk of simultaneous open versions. Like DNS, if both referrals are active, a secondary reference  condition can occur for a variety of reasons.
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by:Gareth_Pointon
ID: 40389856
So whats the best way to setup two File servers for redundancy ?
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by:Cliff Galiher
Cliff Galiher earned 500 total points
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Failover clustering.
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by:Gareth_Pointon
ID: 40390108
Any info?
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by:Gareth_Pointon
ID: 40428815
More how to setup really
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