This optional parameter allows you to specify how many server
instances to create in a server farm. A server farm can improve
performance in some cases on Unix platforms that support fork
system call.
A server farm is a set of identical Radiator servers,
all monitoring the same RADIUS sockets. Incoming RADIUS requests are
distributed among the child servers in the server farm. The main server
acts as a supervisor, and restarts children that die or are terminated.
Defaults to not set, which means no server farm, and only a single
instance of Radiator is run. When
FarmSize is
configured, a shared duplicate cache is also strongly recommended. For
more information, see
DupCache.
Tip
To log server farm instance, see special formatting parameter
%O and
configuration parameter
LogFarmInstance.
CAUTION
This parameter, and the use of server farms is not
compatible with many EAP protocols, such as EAP-TLS, EAP-TTLS, PEAP etc.
This is because such protocols rely in authentication state being held
within each server process, and it is necessary for all the requests for
such protocols to go to the same Radiator instance.
