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DFS replication in same site

Posted on 2013-12-05
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Last Modified: 2014-04-02
Hi

I am replacing a server storage unit containing 4.5TB with new hardware. I would like to use the old storage unit in the same site as the new hardware in a DFS replication group acting as a DFS namespace/folder target backup.

What i would like to accomplish is to have all users work primary towards the new server hardware and in case of hardware downtime be able to switch manually or automatically to the secondary old server hardware.

Is it possible to accomplish in some supported way and keep the server in the same site?

If I move the old server to a different office within the samt subnet and create a site for that office would I then have a possible solution? Communication is 100/100mb/s.


regards

Magnus
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Question by:DicomSupport
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by:Mahesh
ID: 39698201
A referral is an ordered list of servers that a client computer receives from a domain controller or namespace server when the user accesses a namespace root or DFS folder with targets. After the computer receives the referral, the computer attempts to access the first server in the list. If the server is not available, the client computer attempts to access the next server. If a server becomes unavailable, you can configure clients to fail back to the preferred server after it becomes available.

By disabling a namespace server’s or folder target’s referral, you can prevent users from being directed to that namespace server or folder target. This is useful if you need to temporarily take a server offline for maintenance.

Please check below link for more information and steps involved
http://technet.microsoft.com/en-us/library/cc771266.aspx

It is also possible to move server to different location, but then you need to create seperate site and seperate subnet as well because DFS is site aware application.
You need to latch this subnet to new site.Hopefully this should work without DC at this location.
In such cases ideally there is DC in each site.

Hope that helps

Mahesh
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Author Comment

by:DicomSupport
ID: 39698277
Hi

do you refer to this setting in DFS Help? Could I use these settings to accomplish what I want in the same site?

On the Advanced tab, click Override referral ordering, and then click the priority that you want.

First among all targets   Specifies that users should always be referred to this target if the target is available.


Last among all targets   Specifies that users should never be referred to this target unless all other targets are unavailable.


First among targets of equal cost   Specifies that users should be referred to this target before other targets of equal cost (which usually means other targets in the same site).


Last among targets of equal cost   Specifies that users should never be referred to this target if there are other targets of equal cost available (which usually means other targets in the same site).

More info
I also have a DC in the other office.
Would I really need to create a separate/new IP subnet?

Regards
Magnus
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Accepted Solution

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Mahesh earned 500 total points
ID: 39698307
i believe, the above steps you mentioned should work for you for single site.

please test it

If you are going to move server to another site, then you must create new site and new subnet to  latch it.
Because you can't latch one subnet to multiple sites and without different subnets DFS cannot distinguish between sites

Mahesh
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