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Grouper is using Active Directory as it's its subject source as well as a target for groups. It was deployed in high availability on Linux virtual server using load balancers in front of the web and application layer. Greyed components are deployed in active-passive mode so they are easily started if a server fails. Custom processes were developped in Java and uses the Grouper API to "connect" Grouper to external data sources (e.g. "AcadLoader", see the Academic groups section)
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