# CICSPlex Environment

The following figure shows a sample configuration of Substation ES in a CICSPlex environment:

Interruption of transactional and event-driven processing usually takes less than 10 seconds during a Substation ES switchover, assuming that all the components to which Substation ES connects and with which Substation ES communicates are running and available for processing.

Note: For more information, see the section “Substation ES in a CICSPlex Environment” in TIBCO Substation ES Operations and Administration.
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