HP Instant Capacity User's Guide for Versions 8.x

Unassigning a Cell from a Partition
When a cell is unassigned from a partition in a system with Instant Capacity, the number of
intended active cores in the partition decreases only if the number of cores being removed with
the cell is greater than the number of expected inactive cores in the partition. In the following
example of a single partition system with 3 cells, the number of intended active cores remains
the same because the number of cores with the removed cell (4) does not exceed the total number
of expected inactive cores in the partition (6).
Figure 4-5 Partition pre-modification state: Three cells with 2 active and 2 inactive cores in each
(total of 6 active cores), and 6 expected inactive cores
Cell 1
AA
II
Cell 2
AA
II
Cell 3
AA
II
Figure 4-6 Partition post-modification state: Cell 3 is unassigned (total of 6 active remains)
Cell 1
A AA
I
Cell 2
A AA
I
Figure 4-7 Partition post-modification state: Unassigned cell (Cell 3) with 4 inactive cores
Cell 3
IIII
When Cell 3 is unassigned from the partition, the number of intended active cores for the partition
remains at 6. When the partition is rebooted, a total of 6 cores are activated. Cell 3 becomes an
unassigned cell with 4 inactive cores, essentially freeing up usage rights which are distributed
among the remaining cells.
In the next example of unassigning a cell from a partition, the number of cores removed (4) is
greater than the number of expected inactive cores in the partition (3). When this happens, the
number of intended active cores is automatically set to the total number of remaining cores in
the partition (8).
Figure 4-8 Partition pre-modification state: Three cells with 3 active and 1 inactive cores in each
(total of 9 active cores), and 3 expected inactive cores
Cell 1
A AA
I
Cell 2
A AA
I
Cell 3
A AA
I
Unassigning a Cell from a Partition 67