HP Instant Capacity User's Guide for Version 9.x

2.9 Instant Capacity Cell Board
Instant Capacity Cell Board allows you to have additional (inactive) cell-board capacity in your
system for growing business needs. When the need arises, you can purchase additional cell and
memory usage rights; then the inactive cell boards, which contain memory and cores, are available
for instant activation and use.
The Instant Capacity software monitors and enforces the count of inactive cell boards (those
without usage rights) throughout the complex. Inactive cell boards assigned to a partition have
the use-on-next-boot flag set to n (no).
After applying a cell board and memory codeword to convey additional usage rights, you may
activate any cell board with memory not exceeding the amount allowed by the available memory
usage rights, and configure the cell into an nPartition. This is controlled by setting the
use-on-next-boot flag to y (yes) with the parmodify command after the cell is configured
and assigned to the partition, and then rebooting the nPartition.
IMPORTANT: An active cell board must have a minimum of one active core; therefore, you
must also have sufficient core usage rights on the complex to activate at least the one core per
cell board. The Instant Capacity software redistributes active cores across all cell boards of the
partition. Temporary Instant Capacity can be used to activate this core but the system needs to
have at least one core usage right for each active cell. Also, if you are creating a new partition
for the new cell board, additional constraints apply and you might need to acquire additional
core usage rights. For more information see “New Partition Creation and Instant Capacity”
(page 188).
For more information about Instant Capacity Cell Board, see Chapter 6: “Instant Capacity Cell
Board” (page 89).
2.9 Instant Capacity Cell Board 39