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Thread: two way synchronization

  1. #1

    Default two way synchronization

    I've got two NAS-R3 servers, same setup.

    How to replicate both servers?
    I created a volume of 350GB, snapshot 64GB

    Shares have data replication enabled.
    Created a data replication task under Maintenance -> Backup.
    With a interval of 10 minutes ( why not continues synchronization? ).
    In the tasks list the replication shows no problems.

    When I place a new file on one of the shares sometimes it's replicated, sometimes removed..
    Maybe problems with snapshot?

  2. #2

    Default

    Data Replication is not continues synchronization, so when it is completed replicating files waits until next interval.

    Files should not be deleted unless you are doing a cross synchronization to the same shares and this will cause this effect and is not desirable.

    Not sure about the snapshot as you have enough assigned space. You could delete and re-create the replication task to see if this happens again.
    All the best,

    Todd Maxwell


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  3. #3

    Default

    Quote Originally Posted by To-M
    Files should not be deleted unless you are doing a cross synchronization to the same shares and this will cause this effect and is not desirable.
    Yes, I'm doing a cross synchronization.
    How to solve this problem?
    I want high availabilty, that's why I choose open-e.

  4. #4

    Default

    Are you replicating to the same shares:

    Example:

    Source: {share name} Data to Destination: {share name} Data

    Then >

    Destination: {share name} Data to Source: {share name} Data

    If so we do not recommend this. We recommend the following.

    Example:

    Source: {share name} Data to Destination: {share name} Data

    Then >

    Destination: {share name} Data to Source: {share name} Data01

    In this case you will not overwrite the data if changes on Destination.
    All the best,

    Todd Maxwell


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  5. #5

    Default

    Quote Originally Posted by To-M
    If so we do not recommend this. We recommend the following.
    Example:
    Source: {share name} Data to Destination: {share name} Data
    Then >
    Destination: {share name} Data to Source: {share name} Data01
    In this case you will not overwrite the data if changes on Destination.

    I'll try this next monday!
    Thank you for your quick reply!

  6. #6

    Default

    I tried some different setups, but I can't get it two work.
    Replication gives no errors, but synchronization doesn't work right.

    nas1:
    path : /lv0000/www
    share name : /www

    nas2:
    path : /lv0000/www
    share name : /www

    enabled replication on both shares.

    Files aren't replicated in the right way.
    When I add some files tot nas1 and to nas2 at the same time, the synchronization goes wrong. Files are placed on the other server, but the files I placed orginally aren't there anymore.

    Could you give me the right configuration for this setup?
    I also tried the setup you recommended, but I think I'm doing something wrong.
    Isn't there any documentation how to solve these problems?

  7. #7

    Default

    Set the nas2: (Destination Server) first.
    path : /lv0000/www
    share name : /www
    Enable the Data replication agent:
    CONFIGURATION -> NAS settings -> Function: Data replication agent.
    Then enable the Data replication agent for the share:
    SETUP -> NAS resources -> Shares -> [share_name] -> Function: Data replication agent settings.


    nas1: (Source Server)
    path : /lv0000/www
    share name : /www

    Assign Snapshot to lv0000 (located in Volume Manager)
    Go to Maintenance / Backup / Data Replication
    Select Snapshot (lv0000)
    Set Data Replication schedule (Now, Interval or scheduled)
    All the best,

    Todd Maxwell


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  8. #8

    Default

    This is one way synchronization...

    Isn't it possible to setup a two synchronize both servers. So when I put some files on nas1 the files are synct to nas2, and when I add some on nas2 the files are put on nas1?...

  9. #9

    Default

    Yes but not on the same share going back to NAS1.
    All the best,

    Todd Maxwell


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  10. #10

    Default

    Ok, now I understand.

    How do I setup a high availabilty setup with two NAS R3 servers?
    Is there anything to automaticaly take over first server if it fails?

    I saw bonding, but the take over isn't immediately.
    What do you recommend?

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