Virtual Directory, Session Engine, And Web Service Registration - IBM SPSS Data Collection Installation Manual

For each activity in a cluster environment, the installed instance information is saved under
[Server/Application/ApplicationSettings].
The property MultiInstance is used to determine whether each activity utilizes the web load
balancing feature. In DPM Explorer, MultiInstance should be configured as True (even
when there is only one instance) for the IBM® SPSS® Data Collection Interviewer Server,
IBM® SPSS® Data Collection Survey Tabulation and IBM® SPSS® Data Collection Survey
Reporter activities, as these application activities are accessed from a different server.
Note: When load balancing is utilized for computer assisted telephone interviewing (CATI)
performance testing purposes, the MultiInstance property must be set to False.
Interviewer Server Administration load balance selects the instance that exhibits the best
performance. Refer to the Interviewer Server Administration Load Balancing topic in the
IBM® SPSS® Data Collection Developer Library for more information.
The server that hosts the activity instance is logged into.
E
If a user request is redirected to the activity on a different server, the username and ticket
are appended as form parameters. Depending on the username and ticket, httpModules
SingleSignOnModule handles the creation of the ASP.NET authentication ticket.
The activity instance is exited.
E
Upon exiting an activity, httpHandlers EndApplication signs-out the ASP.NET authentication
ticket.
E The Interviewer Server Administration session is logged off.
When a user logs out of Interviewer Server Administration, the ASP.NET authentication cookie is
cleared and the DPM ticket is deleted from the DPM data base.

Virtual directory, session engine, and Web service registration

Starting with IBM® SPSS® Data Collection 6.0.1, during installation you are provided the
option of configuring multiple IBM® SPSS® Data Collection Interviewer Server Administration
virtual directories, session engines, and Web services (depending on which features you select
during installation).
Configuring multiple IBM SPSS Data Collection Interviewer Server Administration virtual directories
Configuring multiple virtual directories, that run simultaneously, provides for optimum load
balancing within a cluster. When any of the following features are selected during installation,
you are presented with the Interviewer Server Administration Virtual Directory Configuration
dialog that provides options for configuring the number of virtual directories that will be installed
per server:
Accessories Service
Phone Interviews
Remote Administration
Survey Tabulation
IBM SPSS Data Collection Interviewer Server installation information
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