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business-intelligencecognoscognos-bicognos-11

What high available architecture for IBM Cognos?

Forgive my basic question, but i'm looking for a high available architecture for IBM Cognos 11.x ?

I came accross some definitions, with 2 Gateways, multiple dispatchers and one content store. But i didn't find it convenience.

Thank you for your help, i appreciate it.

Solution

  • I can think of two potential issues with your deployment of two complete Cognos installs behind a load balancer:

    1. Any user-generated report/dashboard/story content will only exist on one environment.
    2. There could be some corner cases with stateful interactions that don't work, such as paging through long report output. This could be mitigated using session affinity load balancing, but failover might not be clean.

    The standard way of implementing fault tolerance is a single Cognos environment with redundancy for both content manager and application tier:

    https://www.ibm.com/support/knowledgecenter/en/SSEP7J_11.1.0/com.ibm.swg.ba.cognos.inst_cr_winux.doc/c_reportnetinstallationoptions.html

    This requires a minimum of 4 servers - 2 content managers and 2 application tiers. In this configuration only 1 content manager is active. Content manager failover is not necessarily invisible to users.