Microsoft cluster environment and DR

Hi all,
I wonder if anyone can help me with this question. We are running SAP in a HA environment on two physical servers and have virtual servers as additional dialog servers.
My undertsanding of the new 7.0 cluster architecture is the the message and enqueue server has been split out of the CI. So therefor a CI is built up of a enqueue server, a message server and a dialog server.
So in our site we have two clustered servers vic1 and vic2 and 1 virtual server vicvm1 ECC6.0 CI install was done on vic1and the message server and enque server was set up on the cluster nodes running in separate resource groups. vicvm1 was deployed as a secondary application server. This is a pure abap environment
Now to my question.
We are building a dr environment where there is a db server vicdr1 and the application server vicvm1 is being replicated into the DR site.
Is it possible to do a ASCS install on vicdr1 and bring up the replicated server vicvm1 for the system to work? The reason i ask this is there seems to be no clear information on this, and if the instance on vic1 crashed vicvm1 still works and users see no difference. One user has pointed out that there always needs to be a CI running but once you split the message and enqueue server out the CI becomes meaningless and simply another application server.

Hi David
1st - you asked "if the instance on vic1 crashed vicvm1 still works and users see no difference". So in your system if vic1 and vic2 are clustered and vic 1 crashes, doesn't the Ci automatically fail over to the vic 2 cluster node? That would be why the users can keep running transactions on the app server vicvm1.
2nd - "Is it possible to do a ASCS install on vicdr1 and bring up the replicated server vicvm1 for the system to work?" I'm not exactly sure what you are asking here, but I think you will need to re-install the application on the dr systems vicvm1, pointing it to the vicdr1 system. Not just replicate or copy the vicvm1 onto another server and have it work.
Ken

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Years ago i did many SAP in the Microsoft Cluster Environment. I have to say that I like it, some problems can occour but the system was reliable.
At this moment we're planning new environments for the HCM servers. The Microsoft Cluster has been choosen as the main HA system. Well, I have read some documentation and many thinks are changed. The first in the new idea of the SPOFs ( single point of failures ) are the only that will be clusterized and the application servers will be installed in the local machines.
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Have also the physical hostnames of both cluster nodes set in the
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Hi Uta!
Obviously we are the only human beings in the SAP community having this problem. Nevertheless let's give it another try with a - hopefully - more simple problem description (and maybe it will be helpful to copy and paste this description into the open SAP CSN also).
So here comes the scenario:
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Please help! Thanx a lot in advance!
Regards,
Volker

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Edited by: RK.. on Dec 16, 2012 7:54 PM
Edited by: RK.. on Dec 16, 2012 7:55 PM

Microsoft cluster environment and DR

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