Question about AlwaysOn in SQl Server 2014.

  • I have a question about Alwayson and looking for a guidance here.
    Lets say: I have a two node AG always on namely: sqlnode1 and sqlnode2
    sqlnode1 is primary.
    sqlnode2 is secondary.

    Scenario  1: make node1 fail-over automatic and synchronization state as synchronized. secondly make node two as Async and fail-over mode Manual.

    Scenario 2: Make node 1 fail over mode manual and synchronization state as Async. Secondly make node two as Async and fail-over mode as manual.

    Now I understand  what will be the impact on  fail over and all, what I want to know is what is the difference between the two scenario if any.

    Many Thanks,
    B

  • qur7 - Thursday, January 18, 2018 12:17 PM

    I have a question about Alwayson and looking for a guidance here.
    Lets say: I have a two node AG always on namely: sqlnode1 and sqlnode2
    sqlnode1 is primary.
    sqlnode2 is secondary.

    Scenario  1: make node1 fail-over automatic and synchronization state as synchronized. secondly make node two as Async and fail-over mode Manual.

    For auto failover to be supported both nodes have to be set to synch

    qur7 - Thursday, January 18, 2018 12:17 PM


    Scenario 2: Make node 1 fail over mode manual and synchronization state as Async. Secondly make node two as Async and fail-over mode as manual.

    Now I understand  what will be the impact on  fail over and all, what I want to know is what is the difference between the two scenario if any.

    Many Thanks,
    B

    with both nodes set to asynch, failover will be a manual action and data loss may occur

    Read my stairway to AlwaysOn starting at this link

    http://www.sqlservercentral.com/stairway/112556/

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    "Ya can't make an omelette without breaking just a few eggs" 😉

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