Application component in a high availability configuration?

SUGGESTED

Does anyone knows or have some technical documentation related to the configuration of the V11 / V12 application component in a high availability configuration?

As stated on Sage  public document “Enterprise Management, Architecture and System Requirements V12 Final” namely “From version 11, it is possible to have several application servers (but only through a manual set-up at current time). In this type of implementation, multiple application servers will use common files in a single location, typically on a shared file system provided by redundant servers or NAS. Setting up multiple application servers eliminates a single point of failure.”

Regards.