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Former Member

SAP HA Installation on Window

Hi

Now I want to install SAP on Window 2008 R2 with HA mode as active-active mode only.
I would like to understand that if we install the DB on one box and CI on another box and
make them on MCS cluster. Is it OK or any better solution, please suggest

Regards

Vimal Pathak

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1 Answer

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    Former Member
    Mar 12, 2013 at 10:17 AM

    Hi Vimal,

    By the standard SAP HA solution, application servers are running on both nodes at the same time which means that active-active mode (from SAP application server point of view). Let's assume that the db instance running on NodeA. At the failover stage, when NodeA crashed, the database and ERS services transferred to the NodeB and the system continue to the run.

    I hope that it is clear.

    Best regards,

    Orkun Gedik

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    • Former Member Former Member

      Vimal,

      >> In your explaination, I would like to know that how to differenciate between Application server and Central Instance (CI)

      Both nodes (NodeA and NodeB) has an application server, but ASCS has been installed as a cluster resource which is central instance. When NodeA fails CS services will be transferred to NodeB. With this configuration, no need to install NodeC.

      Please find the installation sequence in the installataion guide, below;

      http://service.sap.com/~sapidb/011000358700001414082012E/nw70x_linux_ora_abap.pdf

      Best regards,

      Orkun Gedik