Ensure that a webi processing server is dedicated to a certain publication

Hi there
I'am working on setting up a BO XI 3.1 sp6 cluster. I would like to ensure that heavy monthly publications will run correctly even if one or many users launch very long report s at the same time. ( both DESKI ans WEBI)
The idea was to define a servers group and to dedicate our montly publications to these group. But it seems that it is not possible to prevent other publications to use servers of this group and overload them.
Is there a workaround, or at least a way to reduce the probability of such a problem?
thanks in advance for ideas!

Hi Irfan,
Thanks for taking time to answer.
I already considered the actions you describe, but I concluded that it was not a solution.
But, maybe I'm wrong!
For instance if my monthly publication start at 20:00, It will use the defined webi processing server in the "pubServerGroup".
If some users launch a heavy refresh or "instant scheduled" at 19:54, he may use the very webi Processing Server as it could be the "first available server".
In fact I'm afraid that this will reduce the efficiency of the default load balancing system.
Or, maybe, when a publication is scheduled at 20:00 its server group is flagged as “non available” even a few minutes before? It is not very likely, is it?
regards
Marc

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Yes, we deleted the old one, deleted the cache, created a new one, etc. But the same results.
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Ensure that a webi processing server is dedicated to a certain publication

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