Headroom Management; License Violations - Sun Microsystems SPARC Enterprise M4000 User Manual

Headroom Management

Headroom is the capability to use up to four COD processors per server before
actually purchasing a license. Headroom allows you to activate a COD board under
these conditions:
As a hot spare to replace a failed system board
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When you intend to purchase a license but need to use the resources immediately
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Note – Once you have used headroom to activate a COD resource, you are
contractually obligated to purchase a license for it.
By default, COD resources arrive with headroom disabled. You can use the setcod
command to establish it. However, if all your COD resources are already licensed,
configuring headroom will have no effect. In that case, you need to install additional
COD boards to retain your headroom capacity. You can also reduce or disable
headroom at any time.
While headroom is in use, warning messages appear on the console every four
hours. Once you either deactivate the hot-spared COD board or purchase a license
for the resources and enter the license keys, the warning messages stop. When a
license key is added, the headroom is automatically reduced by the quantity
provided by the license key.

License Violations

A license violation occurs if more resources are in use than are currently licensed on
the server. These events can cause a license violation:
The license database is lost or corrupted while the system is running. This state is
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detected on the subsequent reboot.
This situation can be remedied by reentering the missing license keys, using the
addcodlicense command.
You delete COD licenses with the force option (deletecodlicense -f) while
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the server is still using those licenses.
This could be a valid action in certain cases. For example, you might want to
delete unwanted COD licenses, but want to delay shutting down the domain.
You disable headroom while the server is still using those resources.
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Once the system detects a license violation, the Service Processor will post a notice
on the server console and ensure that no additional COD resources are brought
online until the violation is corrected. In the meantime, it will not shut down
domains or COD resources.
Capacity on Demand (COD) Administration 5