Technical data

Processor Instant Capacity on Demand (iCOD)
iCOD Issues for Managing nPartitions
HP System Partitions Guide: Administration for nPartitions, rev 5.1 402
iCOD Issues for Managing nPartitions
iCOD introduces several new issues for managing nPartitions. The
following list describes some of these new management issues for
nPartition systems that have iCOD configured:
• At least one iCOD processor must be activated for each active cell in
an nPartition.
For example, a three-cell nPartition with iCOD must have at least
three activated iCOD processors, and the iCOD software ensures
that each cell has a processor activated.
• The maximum number of activated processors in an nPartition is the
iCOD “requested active processors” setting.
However, if the number of active cells is greater than the number of
“requested active processors” then the iCOD software activates more
processors than were requested: one processor is activated for each
active cell in the nPartition.
• Only processors on active cells can be activated by iCOD.
Inactive cells in an nPartition cannot have processors activated by
iCOD in the nPartition. To activate processors on inactive cells, you
first must make the cells active.
• Activating and deactivating processors can potentially affect
software packages that rely on certain processor IDs to be present,
such as certain processor set (Pset) configurations. Refer to the
chapter Processor Sets (Psets) on nPartitions on page 421 for details.
Likewise, changing the number of activated processors may have
implications for managing software that is licensed on a
per-processor basis.
• Adding or removing cells in an nPartition with iCOD does not
necessarily increase or decrease the number of activated processors
in the nPartition.
The iCOD software activates the requested number of processors for
an nPartition as long as the nPartition has enough configured
processors to satisfy the request.
Adding a cell to an nPartition increases the total processors and the
number of configured processors in the nPartition. However, if the
requested number of processors remains the same for the nPartition