Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium


R2 DFS Replication - Initial Copy

Posted on 2006-05-26
Medium Priority
Last Modified: 2008-01-09
In the new DFS Replication in Windows Server 2003 R2, is it possible to do an offline initial copy of all the data (200GB) to a remote server?  In other words, I don't want to use the WAN for the initial copy so I would bring the data to the remote site using a USB hard drive and robocopy it to its folder target.

In the past with FRS, you had to choose an initial master and this master would copy the data to the remote server regardless if the data already existed.

Has anyone tried it?  Any info or URL would be greatly appreciated.

Question by:plemieux72
LVL 20

Accepted Solution

Lazarus earned 2000 total points
ID: 16777376
The state of a replicated folder can be one of the following: uninitialized, initialized, initial sync, auto recovery, normal, or in error. When first configured, a replicated folder moves to the initialized or initial sync state, depending on whether the server is defined as the primary member of the replicated folder. If the server is defined as a primary member, Distributed File System Replication (DFSR) automatically initializes the folder. In addition, content within the folder is authoritative. That is, the content will win on conflict with another member. If the server is defined as a non-primary member, DFSR on that member must first complete initial sync where its metadata (and data if necessary) is synchronized from a partner that is primary or has already completed initial sync.

DFSR uses fence values to ensure that the correct version of a resource (file or folder) is replicated where there is a conflict. The fence values are also used in initial sync where the versions on the primary member override versions on the non-primary member. Note that copying the same file without the knowledge of DFSR (such as using xcopy) to its members prior to starting DFSR on the non-primary member (as is done for seeding) will result in the version on the upstream partner overwriting the version on the non-primary member. If the file hashes are identical, the file is not downloaded; otherwise, RDC is used to download the changed portions of the file. If the file was updated on the non-primary member while it is in initial sync state then the file is in conflict with its partner (update conflict) and the file will be moved to the Conflict and Deleted folder where RDC is still used.

Take a look here for more info on DFS that should help you: http://windowssdk.msdn.microsoft.com/library/default.asp?url=/library/en-us/stgmgmt/fs/dfsr_replicated_folders.asp
LVL 10

Author Comment

ID: 16848207
Thanks!   That's a link I hadn't come across.  

I tried the software on two servers separated by a slow unreliable satellite link with an initial copy taken physically to the remote site (mostly the same data on both sides with a few days of file differences)... replication completed within 24 hours and has been stable for about a week now.  No performance issues on either servers either.  DFSR is the way to go!

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

The HP utility "HP Lights-Out Online Configuration Utility for Windows Server 2003/2008" could be of great use when it comes to remotely configure a HP servers ILO WITHOUT rebooting the server. We would only need to create and run scripts using thi…
Numerous times I have been asked this questions that what is it that makes my machine log on so slow, there have been cases where computers took 23 minute exactly after taking password and getting to the desktop. Interesting thing was the fact th…
Look below the covers at a subform control , and the form that is inside it. Explore properties and see how easy it is to aggregate, get statistics, and synchronize results for your data. A Microsoft Access subform is used to show relevant calcul…
When cloud platforms entered the scene, users and companies jumped on board to take advantage of the many benefits, like the ability to work and connect with company information from various locations. What many didn't foresee was the increased risk…

577 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