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FLEXlm supports a set of
three license servers to be used in a redundant manner. If any two
of the three license servers are up and running, the system is
functional and hands out its total complement of licenses.
NOTE:
The use of two license servers is strongly discouraged, because
a set of redundant server nodes with only two server nodes gives
you two points of failure. You must always have both server nodes
running.
When redundant servers are
started, they elect a master, which performs all licensing
operations. The other two servers are there to provide a secure
licensing mechanism in the event of hardware failure, or if the
master server node needs to be rebooted. Should the master fail, if
two servers are still running, one of the remaining two is elected
master and licensing operations continue.
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