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DFS replication RRS feed

  • Question

  • Hi,

    I have two fileservers which used to in DFS and replicated but not any more.  I am not sure which server has the latest version

    of files. If I create a replication for these shares again can I be sure that lates files will replicated between them i.e. I do not

    loose any data,I am not a DFS expert.

    thanks


    Erro

    Monday, March 21, 2016 11:14 AM

Answers

  • Hi Error,

    Thanks for your reply.

    May I ask folder A in FS2 used to be the dfs replication group, now it doesn't to be used any more.

    If so, you could first check in ADSI edit to make sure the information about the previous replication group has been deleted.

    And then you could create the new dfs replication group and fs1 folder A and fs2 folder A as the folder targets.

    Once they become the replication folder. All the data in the two folders will become synchronized. The two folders will keep the same finally only if the replication is fine.

    You could refer to the articles below for more information about DFS replication.

    Overview of DFS Replication

    https://msdn.microsoft.com/en-us/library/cc771058.aspx

    Replication groups and replicated folders

    https://technet.microsoft.com/en-us/library/cc759803%28v=ws.10%29.aspx?f=255&MSPPError=-2147217396

    Best Regards,

    Mary Dong


    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    • Marked as answer by Mary Dong Thursday, April 7, 2016 8:27 AM
    Tuesday, March 22, 2016 8:21 AM
  • Hi! I understand that this is not answering your question directly, but I think it worth to consider switching from DFS to something like shared nothing SMB3 share, thus avoiding such questions that you have right now at all. 

    • Edited by AnatolySV Tuesday, March 22, 2016 10:49 AM
    • Marked as answer by Mary Dong Thursday, April 7, 2016 8:27 AM
    Tuesday, March 22, 2016 10:48 AM

All replies

  • Hi Erro,

    Thanks for your post.

    The dfs replication makes the makes the two server almost simultaneously. If the replication works properly, the two folders may are alomost created at the same time (in my test) except the replication latency. So the data on two servers should be the same. If you want to retire one of the dfs servers. I suggest could check the dfs replication health to make sure the replication is caught up. You should be able to see information about DFS in the event logs.

    You can also run this script: thttp://gallery.technet.microsoft.com/scriptcenter/dac62790-219d-4325-a57b-e79c2aa6b58e to see the backlog status. You want the backlogs in both directions to be at 0, meaning the DFSR is caught up and both sides should be in fully synced.

    You can also run a DFSR diagnostic report in the DFS Replication manager. http://technet.microsoft.com/en-us/library/cc754227.aspx

    Best Regards,

    Mary Dong


    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    • Proposed as answer by Mayank Dhama Tuesday, March 22, 2016 7:06 AM
    Tuesday, March 22, 2016 5:40 AM
  •  Hi Mary,

     thanks for your reply.

     To explain my situation better.

     I have two fileservers fs1 and fs2

     there is a folder A on both servers. Folder A on fs1 is 45GB on fs2 it is 319GB this folder used to be in DFS but not any more for some reason I do not know. Now I want to put these two folders in DFS replication.

     My guess is that fs2 should be the primary one, but lets say that there is a newer version of a  certain file on

     fs1, how will DFS replication handle this? Can I be sure that in the latest or newest file is kept on both servers.

    thanks.


    Erro

    Tuesday, March 22, 2016 7:33 AM
  • Hi Error,

    Thanks for your reply.

    May I ask folder A in FS2 used to be the dfs replication group, now it doesn't to be used any more.

    If so, you could first check in ADSI edit to make sure the information about the previous replication group has been deleted.

    And then you could create the new dfs replication group and fs1 folder A and fs2 folder A as the folder targets.

    Once they become the replication folder. All the data in the two folders will become synchronized. The two folders will keep the same finally only if the replication is fine.

    You could refer to the articles below for more information about DFS replication.

    Overview of DFS Replication

    https://msdn.microsoft.com/en-us/library/cc771058.aspx

    Replication groups and replicated folders

    https://technet.microsoft.com/en-us/library/cc759803%28v=ws.10%29.aspx?f=255&MSPPError=-2147217396

    Best Regards,

    Mary Dong


    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    • Marked as answer by Mary Dong Thursday, April 7, 2016 8:27 AM
    Tuesday, March 22, 2016 8:21 AM
  •  Hi Mary,

     thanks for your reply.

      So I can just delete  the old replication folders or settings, and  create a new one and thaen everything should

      be replicated btw. servers with latest data ?

     brgds.


    Erro

    Tuesday, March 22, 2016 8:45 AM
  • Hi! I understand that this is not answering your question directly, but I think it worth to consider switching from DFS to something like shared nothing SMB3 share, thus avoiding such questions that you have right now at all. 

    • Edited by AnatolySV Tuesday, March 22, 2016 10:49 AM
    • Marked as answer by Mary Dong Thursday, April 7, 2016 8:27 AM
    Tuesday, March 22, 2016 10:48 AM