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  • 4 Node DAG & FSW - Queries

    We are migrating from Exchange 2007 to Exchange 2013.

    Exchange 2007 is a single box with all roles in one.

    OS Windows Server 2008 Enterprise Version 6.0 (Build 6002) Service Pack 2

    Exchange Microsoft Exchange Server 2007 Version 8.2.176.2

    All Mailbox servers on Exchange 2013 below are on

    Windows Server 2012 R2 Standard Build 9600
    Microsoft Exchange Server 2013 Service Pack 1 Version 15.0.847.32
    Our setup for Exchange 2013 is 4 mailbox servers and 1 CAS.

    EXMB01 DB1 (Active) DB2 (Passive)
    EXMB02 DB2(Active) DB3 (Passive)
    EXMB03 DB3 (Active) DB1 (Passive)
    EXMB04 DB 1, DB2 & DB3 (All Passive) The main reason for this mailbox server is for running mailbox and db backups to ensure the other servers do not get loaded.
    My questions are:

    How do I setup a DAG in this setup.
    How many DAG groups must I have?
    I have a non-exchange machine setup as FSW. Kindly advise how I need to configure this?
    For coexistence between Exchange 2007 and Exchange 2013, kindly advise the minimum versions and/or service packs required.
    Appreciate your help in this to ensure the migration is smooth.

  • #2
    Re: 4 Node DAG & FSW - Queries

    The first thing you need to do is update Exchange 2013.
    SP1 is effectively CU4, which is very old. Install CU7 on all nodes, reboot whether it asks or not.

    A server can only belong to one DAG. Therefore your design only allows a single DAG. Hopefully the first three servers are on the same site, if not, then your design is flawed.

    Simply create the DAG, add the servers to it.
    For the FSW, add the group "Exchange Trusted Subsystem" to the local admins, reboot. Exchange will do the rest when you create the DAG and set it to use that machine for the FSW.

    Oh and personally I wouldn't bother with the separate CAS. All roles on all servers. That will allow you to have five servers, so no need to have a separate FSW. If you insist on using a separate CAS, then use it for the FSW instead.

    Simon.
    --
    Simon Butler
    Exchange MVP

    Blog: http://blog.sembee.co.uk/
    More Exchange Content: http://exchange.sembee.info/
    Exchange Resources List: http://exbpa.com/
    In the UK? Hire me: http://www.sembee.co.uk/

    Sembee is a registered trademark, used here with permission.

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    • #3
      Re: 4 Node DAG & FSW - Queries

      Thank You for your response.

      Based on your design of setting up all servers with CAS/MB. Kindly advise on the Digital Certificate configuration.

      I understand we need to install the digital certificate on all the servers. am i correct?

      Is it advisable to change the default smtp/pop3 ports of the new deployment. If so, how and where do i change this.

      Appreciate your valuable advise.

      Thanks.

      Comment


      • #4
        Re: 4 Node DAG & FSW - Queries

        You should have a certificate on all servers with the CAS role.
        Whether all servers will have the same URL is up to you, if they do, then you will need a load balancer of some description in front to manage the connections.

        Why would you want to change the default port numbers? You don't get security by obscurity.

        Simon.
        --
        Simon Butler
        Exchange MVP

        Blog: http://blog.sembee.co.uk/
        More Exchange Content: http://exchange.sembee.info/
        Exchange Resources List: http://exbpa.com/
        In the UK? Hire me: http://www.sembee.co.uk/

        Sembee is a registered trademark, used here with permission.

        Comment


        • #5
          Re: 4 Node DAG & FSW - Queries

          Thank You Simon.

          Appreciate if you can point me in the right direction with regards to the load balanceing for all of the 4 servers.

          Thanks

          Philip

          Comment


          • #6
            Re: 4 Node DAG & FSW - Queries

            You want a hardware load balancer.
            Something like a Jetnexus or Kemp. If you are in Europe, then a Jetnexus is probably the better option as support is in the UK, Kemp is the USA.
            If the platform if virtual, then both do virtual load balancers, which work very well.

            Full disclaimer - both Kemp and Jetnexus have provided me with NFR copies of their products.

            Simon.
            --
            Simon Butler
            Exchange MVP

            Blog: http://blog.sembee.co.uk/
            More Exchange Content: http://exchange.sembee.info/
            Exchange Resources List: http://exbpa.com/
            In the UK? Hire me: http://www.sembee.co.uk/

            Sembee is a registered trademark, used here with permission.

            Comment

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