Using Instant Capacity to Manage Processing Capacity

Unassigning a Cell from a Partition

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 processors in the partition decreases only if the number of processors being removed with the cell is greater than the number of unlicensed processors in the partition. In the following example of a single partition system with 3 cells, the number of intended active processors remains the same because the number of processors with the removed cell (4) does not exceed the total number of unlicensed processors in the partition (6).

Table 4-4

Partition pre-modification state: Three cells

 

with 2 active and 2 inactive processors in each

 

(total of 6 active processors)

 

 

 

 

 

 

 

 

 

Cell 1

Cell 2

 

Cell 3

 

 

 

 

 

 

 

 

A A I I

A A I I

 

A A I I

 

 

 

 

 

 

Table 4-5

Partition post-modification state: Cell 3 is

 

unassigned (total of 6 active remains)

 

 

 

 

 

 

 

Cell 1

Cell 2

 

 

 

 

 

 

 

 

 

 

A A A I

A A A I

 

 

 

 

 

 

 

Table 4-6

Partition post-modification state: Unassigned

 

cell (Cell 3) with 4 unlicensed processors

 

 

 

 

 

 

 

Cell 3

 

 

 

 

 

 

 

 

 

 

 

U U U U

 

 

 

 

 

 

 

 

 

 

When Cell 3 is unassigned from the partition, the number of intended active processors for the partition remains at 6. When the partition is rebooted, a total of 6 processors are activated. Cell 3 becomes an unassigned cell, and in order to be in compliance, all 4 processors in Cell 3 are unlicensed (Instant Capacity) processors.

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Chapter 4