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Difference in Multi-SID Installation between Windows 2003 and Windows 2008, linkd, Client Access Poi

Tuesday, 31 July 2012 14:02

Written by Kamesh Ravishankar

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MULTI-SID CLUSTER INSTALLATION - CAP TECHNOLOGY - WIN 2008(R2)

 

Issue : Windows 2003

 

As we know, Multiple SAP systems can be implemented in one SAP Cluster (2 Nodes). Adding an additional sapmntshare is not possible in Windows 2003 as it already exists and points to the shared disk of the first clustered SAP system.

The solution is to rename the cluster share sapmnt resource into sapmnt. On the local disk, which must have the same disk letter on all MSCS nodes, you create the usr\sap\ folders on all nodes and set the saploc and sapmnt shares on usr\sap. Then you create junctions on the local disk pointing to the relevant SYS and folders on the shared disks on all nodes. This is achieved by Linkd.exe by windows Resource Tool Kit. Using this exe the junction from local drive (sapmnt) to shared cluster disk (sapmnt) is created.

 

Note : This is done only because Windows 2003 doesn’t allow to have same share name(sapmnt) on different drives of the same server.

Solution : Windows 2008 R2

The earlier issue can be overcome in Windows 2008 R2 using the Client Access Point(CAP) technology. It allows to have sapmnt share in the different disks on the same server. Hence, the linkd.exe is no longer required in Window 2008 R2. This will allow to create Multiple sapmnt share in the respective cluster groups.

 

Thanks

Kamesh Ravishankar

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Difference in Multi-SID Installation between Windows 2003 and Windows 2008, linkd, Client Access Poi