Thanks for clarification. so..you mean to say, we cant set up cluster in SAP distribution env.
I didn't say that. Here is what I have said.
From the installation point of view a distributed setup and HA setup can possibly look the same. The difference here is that you make use of a cluster software in the HA environment. The cluster software is provided and licensed by the OS vendor. Eg: HACMP for IBM AIX, MSCS for Windows.
You can have an HA setup with DB on one node and SAP on the second node.
Regards
RB