Autodesk COMBUSTION-4 - Acad Full-seat Windows Version Network Manual page 11

Distributed Server Model
The distributed server model is the preferred
method of installing combustion in a network
environment. The distributed server model allows
you to place (distribute) the AdLM on more than
one server. This lets you split your software licenses
between multiple servers. The servers can be located
at different sites, if necessary.
The distributed server model gives you more
network tolerance. Since the software licenses are
split among multiple servers, licenses can still be
granted should one of the servers fail or run out of
licenses. In addition, a distributed server requires
less system administration than a redundant server
model. However, if a server fails, some licenses are
not available. This drawback can be resolved by
adding the
lm_license_file
variable to each client workstation.
To create a deployment using the distributed server
model, you install the AdLM on each server you
want to configure.
This model requires a unique license file for each
server. See License File.
Once the network installation is complete, you
install combustion on each workstation. The client
installation creates a combustion.lic file on the client
workstation that identifies which license server the
client communicates with to obtain a network
license. The client workstation tries to obtain a
network license only from the server that was
configured when the AdLM created the deployment
location from which the client was installed.
Adding the
lm_license_file
variable to each client workstation is necessary if you
want to have license carryover. This is a key strength
of the distributed server model. It allows the client
workstation to automatically obtain a license from
another server in the distributed server pool if one
server should fail or run out of licenses.
environment
environment
Network Configuration Models
For example, if you installed a distributed server
pool of two servers, each server has a license file for
five combustion licenses. You then create six client
installations that use the default combustion.lic file
pointing to the first server. If all the licenses on the
first server are in use, the sixth workstation that tries
to obtain a license from the server will be denied,
even when the second server in the pool has five
available licenses.
You have two options to get the sixth workstation a
license:
• Edit the combustion.lic file so the sixth workstation
looks exclusively to the second server for its license.
Note: Using this method does not give you the
benefit of network tolerance.
• Add the
lm_license_file
variable to all the workstations so the AdLM can
access any available licenses on either server. See
License File Parameters.
Note: If the combustion.lic file and the
lm_license_file environment variable are both
used, the environment variable takes priority.
Redundant Server Model
With the redundant server model, you must use
three servers to authenticate a single license file. One
server acts as the master, while the other two provide
backup if the primary server fails. If all three servers
are active and functioning properly, all software
licenses are available to client workstations. A
redundant server model does have some drawbacks
you need to consider:
• A redundant server model should be maintained by
a dedicated system administrator.
• At least two servers must be functional in order for
client workstations to obtain licenses. If two servers
fail, client workstations cannot get licenses.
environment
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