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Assigning IP to an "IP-less DAG". Should I expect downtime?

    Question

  • Hi

    I have installed multiple exchange 2013 multirole servers on windows 2012 R2.

    I was excited about the concept of "DAGs without IPs".  So I implemented that instead of traditional DAG windows failover clustering that must have IP address(es).

    So it turns out that most backup software + monitoring software connect to DAG using its IP, which is also called admin access point.  

    Anyways; I have a problem as our backup and monitoring software requires DAG with IP

    There is only one place that I found (technet blog); that mentioned the situation.  Basically you CANNOT switchover to DAG with IP.  It simply won't work.  You have to remove all the DAG members and then at that point you can assign it an IP!!!!!!!!!!!

    So; here is my question.  Does doing so cause downtime??  I know removing servers from DAG membership also removes cluster feature from them but does it mean reboot required if I want to add them back?

    I just want to know if I have to schedule this off hours or not

    Thanks

    Friday, August 8, 2014 1:05 PM

Answers

  • No reboot is required, but you have to remove the replicated databases from each server before it can be removed from the DAG, so you will be down to one copy during the transistion.


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    • Marked as answer by Kman2k Sunday, August 10, 2014 11:16 PM
    Friday, August 8, 2014 1:18 PM
    Moderator

All replies

  • No reboot is required, but you have to remove the replicated databases from each server before it can be removed from the DAG, so you will be down to one copy during the transistion.


    Twitter!: Please Note: My Posts are provided “AS IS” without warranty of any kind, either expressed or implied.

    • Marked as answer by Kman2k Sunday, August 10, 2014 11:16 PM
    Friday, August 8, 2014 1:18 PM
    Moderator
  • HI Kman2k,

    Could you post link to technet blog where You found information about assign IP to DAG?

    Thanks,

    Arkadiusz

    Tuesday, October 21, 2014 12:11 PM