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Feb 17, 2011 at 11:03 PM

SAP on MSCS and log shipping for DR

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Hi Experts,

Can anyone please explain if below is possible :

- We have installed Netweaver 7.01 Java application server on Microsoft clustering which is working perfectly ok.

-Now we are looking at building a DR solution for the above installation using SQL Server 2008 Log-shipping. The DR site has the same MSCS configuration as the primary site.

-If we log-ship the production database and create a secondary database in "standby" or "norecovery" mode, how do we install a Passive SAP Central instance in case we want to failover from the primary to secondary?

- We know that we have the primary database log-shipped to the secondary site and in the event of failure we can switch the roles and make secondary as primary and then perform the system copy steps on the MSCS. the drawback here is that it will take a long time to bring the system online if we perform the system copy. Our RTO is one hour only so this is not acceptable.

Question : Is there anyway we can install the Central Services and Applicaiton servers beforehand on the secondary site on the secondary log-shipped database so that in the event of failure all we do is bring the secondary database primary and then start the SAP on the secondary site ?

If yes then can anyone point me the any SAP note or documentation that has the details of how to do this.

I have already looked at 1101017, 965908 but its not clear how we can perform the installation on the JAVA stack only.

We want to implement similar to what is shows in the below diagram :

http://help.sap.com/saphelp_apo/helpdata/en/fc/33c028d58511d386ee00a0c930df15/content.htm

Appreciate if someone can assist in resolving the above query.

Thank you.

RA