HP Instant Capacity (iCAP) manual Special OpenVMS-Specific Features and Considerations

Models: Instant Capacity (iCAP)

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Special OpenVMS-Specific Features and Considerations

Core Activation and Deactivation

Unlike HP-UX, the OpenVMS operating system provides a user interface to start and stop system processor resources. When you enter the START /CPU command on an OpenVMS system in a complex containing iCAP resources, the ICAP_SERVER process validates that the start operation does not take the complex out of compliance. When you enter the STOP /CPU command, the CPU might restart at a later time if the count of intended active cores on the system is greater than the actual active cores.

IMPORTANT: The ICAP command or the corresponding HP-UX foreign commands must be used on OpenVMS systems when stopping and starting in complexes containing iCAP components. Using the START /CPU command can result in unintended consequences, such as an unexpected usage of temporary capacity or the deactivation of cores on the system or on another system in the complex. Using the STOP /CPU command can result in an unexpected restart of the core or the unexpected start of a core in another system in the complex.

To start cores on OpenVMS, use the ICAP ACTIVATE/CPU= command. To stop cores on OpenVMS, use the ICAP DEACTIVATE/CPU= command.

Email Considerations

The iCAP software requires that SMTP mail be configured on the OpenVMS system to send email to the system contact. For more information about setting up SMTP mail, see your IP provider’s documentation.

220 Considerations for OpenVMS Systems

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HP Instant Capacity (iCAP) manual Special OpenVMS-Specific Features and Considerations, Core Activation and Deactivation