Specifications

Overview of Setting up Redundant License Servers
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Chapter 3 - Setting up Redundant License Servers and License Balancing
many are in the free pool by using WlmAdmin or lspool.) The free pool is a
temporary storage location for license tokens. Tokens are placed in the free pool
when you do not allocate all license tokens for a feature/version to the redundant
license servers; leftover tokens go into the free pool.
As license balancing occurs, license tokens will be automatically redistributed
from the free pool to the redundant license server requesting tokens. Or, the
administrator can use lspool to clear the free pool by increasing the number of
tokens distributed among the redundant license servers. When the free pool is
empty and a license server requests more tokens, the leader license server takes
away unused tokens from other license servers and assigns them to the
requesting license server.
What Happens When a Redundant License Server Goes Down?
If a redundant license server goes down, the license tokens it was allocated are
inherited by the other redundant license servers, and the end user now acquires
license tokens from another license server with no administrator intervention
necessary.
If majority rule is in effect for a particular license code (see “Majority Rule” on
page 41) and the majority of redundant license servers go down, requests for
licenses for that feature/version are no longer serviced until the majority of
license servers are up and running again. (Requests for non-redundant licenses or
redundant license codes not using majority rule will continue to be serviced.)
Overview of Setting up Redundant License Servers
There are three aspects to setting up and using redundant license servers. This
section is an overview of this process. Following sections give more
information.
1. First, you must decide how many redundant license servers to set up and
select the computers on which they will reside. (You must define at least
three; we recommend a maximum of five.) Various factors, including