Carl_Brothers
Sep 24, 2009Employee
LTM versus SAP message server for BW
I had set up a VS in the LTM for a SAP BW reporting module on a set of servers, which seemed to work fine applying the same rules layed out in the Netweaver SOA deployment guide. Now the BW module is included in the main internal SAP netweaver portal site via frames on the web page.
The SAP admins moved away from the previously constructed VS in the F5 citing that message server would always make a better initial load balancing decision. Now I would tend to think that putting soo much credibility on the initial LB decision is shaky ground to stand on as the performance of the node you connect to can degrade while connected, regardless of solution. The director of the SAP admin group is adamant about having this degree of functionality in the LTM or the use of the LTM is a non-starter. Use of logic like your CPU cycles are more valuable than the CPU cycles in my 6800 (BTW it averages less than 3% CPU used) has fallen on deaf ears thus far I feel.
So far I think the closest option would be the use of Dynamic Ratio LB and the use of SNMP DCA monitors. Anyone got a similar situation or set of challenges as well as a solution?
Thanks,
Carl B