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How to configure 2x CAS server to ensure email traffic flow during one server failure ?

    Question

  • Hi Folks,

    Can anyone here please suggest me what is the best way to configure the CAS server role to guarantee the email traffic flow during one server failure or reboot (during patching) ?


    /* Server Support Specialist */

    Wednesday, November 13, 2013 1:26 PM

Answers

  • Hi,

    CAS role is responsible for Client requests. For more CASArray questions and principles, we can refer to:

    http://blogs.technet.com/b/exchange/archive/2012/03/23/demystifying-the-cas-array-object-part-1.aspx

    Thanks,

    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 tnsfl@microsoft.com


    Simon Wu
    TechNet Community Support

    Monday, November 18, 2013 12:16 PM
    Moderator
  • Hi,

    Assuming that both servers are in one site: configure load balanced cluster with both servers. You can use layer-4 hardware loadbalancers (preferred), Windows load balancing or DNS round robin. Then configure external/internal URL`s to have correct cluster IP values for them.

    Some useful informations:

    http://www.msexchange.org/articles-tutorials/exchange-server-2013/high-availability-recovery/introducing-load-balancing-exchange-server-2013-part1.html


    Robert Mandziarz | IT Administrator: CodeTwo

    If this post helps resolve your issue, please click the "Mark as Answer" or "Helpful" button at the top of this message. By marking a post as Answered, or Helpful you help others find the answer faster.

    Wednesday, November 13, 2013 5:05 PM
  • Hi,

    I suggest we firstly refer to the following article:

    Transport High Availability

    http://technet.microsoft.com/en-us/library/jj657506(v=exchg.150).aspx

    Thanks,

    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 tnsfl@microsoft.com


    Simon Wu
    TechNet Community Support

    Thursday, November 14, 2013 10:20 AM
    Moderator

All replies

  • Hi,

    Assuming that both servers are in one site: configure load balanced cluster with both servers. You can use layer-4 hardware loadbalancers (preferred), Windows load balancing or DNS round robin. Then configure external/internal URL`s to have correct cluster IP values for them.

    Some useful informations:

    http://www.msexchange.org/articles-tutorials/exchange-server-2013/high-availability-recovery/introducing-load-balancing-exchange-server-2013-part1.html


    Robert Mandziarz | IT Administrator: CodeTwo

    If this post helps resolve your issue, please click the "Mark as Answer" or "Helpful" button at the top of this message. By marking a post as Answered, or Helpful you help others find the answer faster.

    Wednesday, November 13, 2013 5:05 PM
  • Hi,

    I suggest we firstly refer to the following article:

    Transport High Availability

    http://technet.microsoft.com/en-us/library/jj657506(v=exchg.150).aspx

    Thanks,

    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 tnsfl@microsoft.com


    Simon Wu
    TechNet Community Support

    Thursday, November 14, 2013 10:20 AM
    Moderator
  • Cool, so in this case I just need to set it as stand alone and then configure the CASArray Object through powershell ?

    /* Server Support Specialist */

    Thursday, November 14, 2013 10:25 AM
  • Yes Rob, I'm planning to use Citrix Netscaler Gateway VPX virtual appliance as the load balancer.

    /* Server Support Specialist */

    Thursday, November 14, 2013 10:25 AM
  • Hi,

    CAS role is responsible for Client requests. For more CASArray questions and principles, we can refer to:

    http://blogs.technet.com/b/exchange/archive/2012/03/23/demystifying-the-cas-array-object-part-1.aspx

    Thanks,

    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 tnsfl@microsoft.com


    Simon Wu
    TechNet Community Support

    Monday, November 18, 2013 12:16 PM
    Moderator