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Former Member

Sybase replication server on HA / DR

Hi Experts,

We are in the process of setting up DR environment for Sybase ASE using replication server. The primary site has an HA configured.

My doubt is when we need to install replication server at standby site, what host needs to be specified as the "primary system hostname" - The hostname of CI or the DB server.

Additionally, do we need to install replication server on both nodes of HA cluster? and how would the DR agent configuration work in case of DB failover to the CI node?

Unfortunately, there is very little documentation available online on how to setup the DR environment, apart from SAP note 1891560

Would appreciate your invaluable inputs on this.

Thanks in anticipation.

Regards,

Varun

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    Former Member
    Sep 18, 2014 at 06:14 PM

    Hi Varun,


    Can you share with us what kind of HA solution is being used?

    In general:

    You always want to use the name of the 'cluster' for any host name (assuming this name or IP will always point to the currently active node in the HA environment.

    For installation, without knowing what your HA solution looks like, I would say "follow the ASE".

    Install the replication software on the same hosts and same locations as the ASE software.  If you are installing ASE on a shared storage device between the HA nodes, you will want to do the same with the replication software.  If you are installing the Replication Server on a totally different host (not part of the HA solution), then this would not apply.

    Regards,
    Stephen

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    • Former Member Former Member

      Hi,

      I Encountered the issue during installation of replication server on windows cluster node.

      My environment is

      Primary SAP HA on windows cluster and

      Standby SAP Standalone on standby side.

      i got the error

      Assertion failed: Replication Server and Database server on same host is not supported in OS cluster environment

      So my solution was install replication services alone with DR agent on saprate HOST, out side the cluster on primary side and install replication service on same host at standby side.

      Working Solution is

      Primary

      SAP HA on windows cluster   

      NEW HOST/SERVER with  Sybase replication server

      Standby SAP Standalone on standby side + Sybase replication on same host.

      And it work for me successfully, I asked SAP support to validate this solution but i didn't get any acknowledgement yet, But its working for me since 4 months.

      Sumit