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Former Member

640 MSCS Cluster

Hello experts,

We are running WAS 640 + portal + KM on our production server (UNISYS consolidation server on which most of critical applications of our customer are running).

For high availability reasons we immediately have to migrate/move/copy the entire installation of our server to another environment which contains two strong servers in cluster (MSCS). The new environment is also will be in 640 version. Notice that the name and IP of the new machines will be deferent from the original one. The majority part of our contents is on KM.

I would like to get advice about the following issues:

1. Which components need to be failover mode? In which mode (Active-Active or Active-Passive)?

2. What is the faster and simple way (But official and right way) to perform this mission in minimum risk? Should I perform copy installation process?

3. Is it possible to keep the original DB (assume that the consolidation server has the solution of high availability for databases) on the old machine and point the new servers to it?

Thanks in advance

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2 Answers

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    Former Member
    Jan 19, 2007 at 04:01 PM


    You may want to have a look at the following SAP Notes.

    Note 107534 - Migration on Microsoft cluster server

    Note 106275 - Availability of SAP components on Microsoft Cluster Server



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    Former Member
    Jan 20, 2007 at 09:13 AM

    1, SAP recommends for Active - Passive MSCS as the SAP component are light and desnt take much time to start so the downtime for a failover is minimal.

    2, Perform a new installation as MSCS installation is different than other central and distribution installation. So do the ne installation and migrate the data to it and in MSCS the DB and SAP dependent data are suppose to be on share drive.

    3, I am not sure of it. If you point the old DB which is on MSCS then how will failover of the new server with SAP will recon the DB. When the Failover happen the cluster has to pass from one node to other initizing the services on the failover node.



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