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Multiple SAP Systems In One MSCS Cluster

Former Member
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We have installed a NW 7.0 EHP abap stack in a MSCS Cluster with 2 nodes.

This was installed as a standard Cluster Install.

We have now higlighted a requirement to install a 2nd (Java ) instance in this Cluster Group.

The NW 7.0 EHP1 documentation and Note 1321854 shows that multiple SAP systems in one MSCS cluster is supported.

The documentation, however, is not clear if the 2nd instance can be installed when the 1st instance was installed without the preperations for Multiple Systems.

There are no further documentation or guidelines to help.

Has anyone come across this situation or managed to install 2 SAP instances in one Cluster Group based on Windows 2003, SQL Server 2005.

Regards

Accepted Solutions (1)

Accepted Solutions (1)

KleinM
Employee
Employee
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I am not quite sure if I understood your problem completley. But let's see...

Usually you use on on MSCS Cluster Group per SAP instance. So you have your already existing NW 7.0 ABAP stack in a separated Cluster Group, and you create a new Cluster Group for your new Java system.

You can find more information about it in this guide here on SDN:

Link: [;

More information about High Availability Setups for SAP System can be found here on SDN:

Link: []

If you want to use the same database for your clustered ABAP stack and your new Java stack you can do a MCOD installation.

Please see Link: [SAP Note 388866 - Multiple Components on One Database - Installation|https://service.sap.com/sap/support/notes/388866]

Hope this helps.

Best regards,

Mathias

Former Member
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Thanks for the info.

The question was if we can change an existing clustered install to allow a 2nd SAP Instance to be installed.

The answer is tha it can be, and is documented the guides provided

Answers (0)