HP Instant Capacity Version 10.x User Guide (5900-1581, March 2011)

requires purchase of an additional core usage right in order to meet the minimum requirement of
1 core per active cell board.
Table 3 Cell Board Activation Requiring Additional Core Usage Rights
NotesInactive Cell Board
Cores
Active Cell Board
Cores
State
No core usage rights are available on the
complex.
4 inactive1 active, 3
inactive
Before Cell Board
Activation
One additional core usage right is acquired
because the number of core usage rights is less
than the number of active cell boards.
1 active, 3 inactive1 active, 3
inactive
After Cell Board
Activation
Activation of an Instant Capacity Cell Board
An Instant Capacity cell board is usually assigned to an nPartition; however, the cell board does
not participate in the boot of the nPartition. Activating an Instant Capacity cell board is a two-step
process:
1. Set the cell board’s use-on-next-boot flag to y (yes) using the parmodify command.
2. Reboot the nPartition (using the shutdown -r command on HP-UX), or (on HP-UX 11.31
OEUR 0709 or later) a Cell Online Activation.
For example, to change the use-on-next-boot flag to y on the Instant Capacity cell board in cabinet
0, slot 5, in nPartition 3, execute the following command:
/usr/sbin/parmodify -p 3 -m 0/5::y:
If core usage rights are available in the complex, the number of intended active cores is increased
to as high a number as possible, limited by the number of cores in the newly activated cell board.
The available core usage rights are automatically used in the cell activation. If there are no available
core usage rights, the number of active cores remains the same.
After you have set the cell board’s use-on-next-boot flag to y, and have rebooted the nPartition,
you can use the icapmodify command to activate cores that are listed as Additional cores
that can be assigned with current usage rights (as reported by the icapstatus
command).
Activating an Instant Capacity cell board causes at least one core to become active on that cell
board after reboot.
For details about adding and configuring cells in nPartitions, see the nPartition Administrator's
Guide.
Accidental Activation of an Instant Capacity Cell Board
If you accidentally activate an Instant Capacity cell board, you can deactivate it by following this
two-step procedure:
1. Set the cell board’s use-on-next-boot flag to n (no) by using the parmodify command.
2. Reboot the nPartition, or (on HP-UX 11.31 OEUR 0709 or later) a Cell Online Deactivation.
This step is not necessary if there was no reboot after the activation.
For example, to change the use-on-next-boot flag to n on the Instant Capacity cell board in cabinet
0, slot 5, in nPartition 3, execute the following command:
/usr/sbin/parmodify -p 3 -m 0/5::n:
In this command, the n flag sets the cell board’s use-on-next-boot flag to “no” and causes the cell
board to not participate in the nPartition when it is booted.
For details about adding and configuring cells in nPartitions, see the nPartition Administrator's
Guide.
68 Instant Capacity Cell Board