To ensure BI server fault tolerance, BI server works in combination with state server. The following software can be used to create a state server:
NOTE. In order a Memcached-based state server works, install OpenSSL libraries.
Working with BI server, after executing requests to change objects, their states (moniker and parameters required to restore the object) are saved at the state server and loaded from the server on further addressing the objects. Saving states is supported by the following objects:
Repository connection settings (description of repository and credentials used on connection).
Express reports.
Dashboards.
Regular reports.
Workbooks.
The types of objects specified above, created in BI server memory, but not yet saved in the repository.