Technical data

Managing nPartitions

Unassigning (Removing) Cells from an nPartition

HP System Partitions Guide: Administration for nPartitions, rev 5.1

273

Unassigning (Removing) Cells

from an nPartition

Removing a cell from an nPartition involves unassigning the cell from

the nPartition to which it is assigned and, if necessary, performing a

reboot for reconﬁg of the nPartition.

You can remove any cell from the local nPartition and can remove

inactive cells from remote nPartitions in the same server complex.

However, at least one core-capable cell must remain in each nPartition.

You can remove (unassign) cells from nPartitions by using these

procedures:

• Removing Cells from an nPartition [HP-UX] on page 274

This procedure (using the parstatus and parmodify commands)

removes cells from an nPartition using HP-UX commands.

• Removing Cells from an nPartition [Partition Manager] on page 276

This procedure (Partition —> Modify Partition action, Add/Remove

Cells tab) removes cells from an nPartition using Partition Manager.

When removing cells from an nPartition, you should ensure that the

modiﬁed nPartition still adheres to the hardware requirements and

performance guidelines for nPartitions. Refer to the chapter Planning

nPartition Conﬁgurations on page 109 for details.

After you remove a cell from an nPartition, the cell’s I/O chassis also is

removed from the nPartition. As a result, any I/O devices associated with

the cell are made unavailable to the nPartition after the cell is removed.

If you want to remove the last cell in an nPartition, you must instead

remove the nPartition using the parremove command or Partition

Manager.

Once a cell is unassigned, the cell (and any I/O resources connected to

the cell) is considered to be an available resource that is on the “free cell

list” and can be assigned to any nPartition in the server complex.