Wednesday, August 5, 2009

SAP Solution Manager - MSCS HA Configuration

This setup needs better understanding of SAP components. I was not able to publish this in detail step by step.But given a brief introduction and will provide more details if anyone needs.

Requirements -

1.Shared Disks - for SAP mount points (//sapcluster/sapmnt), Oracle Datafiles(including archive files,log files and control files) and Quorom Disks for MSCS cluster services.
2.MSCS Active Directory
3.MSCS DNS configuration
4.MSCS Cluster services
5.Oracle Fail Safe (Optional)
6.Oracle RAC (For better scalling and High availability for the Oracle Database)
Windows 2003 server



6 node configuration for HA setup - NO SPOF for the most of the SAP components

Configuration and Setup in Brief
--------------------------------
1.Node1 - Called Publish.Install and configure MSCS active Directory and DNS.
Domain called sapdomain.com.
2.Node2 - Called Subscribe.Will be part of sapdomain.com domain.This will be first node for the HA for SAP Components.Will be running SCS and ASCS.
3.Node3 - Called Witness.Will be the second node for SCS and ASCS.
4.Node4 - Called repeng.Will be running Replication Enqueue server.Shared Disk S will be mounted as NFS.
5.Node6 - Called Diag1.Will be running Diag SAP services.Installed on Local drive.
6.Node7 - Called Diag2.Will be running Diag SAP Services.Installed on Local Drive.


For more HA , you may separate the Oracle Database from the SAP node and use with RAC feature.Diag instances can be configured with SAP logon groups and may also used with LBR for Load balancing with HA.

Not complete...

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