Technical data

Procedures for Managing nPartitions
Removing Cells from an nPartition
HP System Partitions Guide: Administration for nPartitions—rp7410
EMSP—[e-mail]
218
Removing Cells from an nPartition
Removing a cell from an nPartition involves unassigning the cell from
the partition 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 partitions in the same server complex.
However, at least one core-capable cell must remain in each partition.
You can remove (unassign) cells from nPartitions by using these
methods:
• HP-UX Commands on page 219
This procedure (using the parstatus and parmodify commands)
removes cells from an nPartition using HP-UX commands.
• Partition Manager on page 221
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 partition still adheres to the hardware requirements and
performance guidelines for nPartitions.
After you remove a cell from an nPartition, the cell’s I/O chassis also is
removed from the partition. As a result, any I/O devices associated with
the cell are made unavailable to the partition after the cell is removed.
If you want to remove the last cell in an nPartition, you must instead
remove the partition 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.
Reboot for Reconfig Guidelines
In some situations you must immediately perform a reboot for reconfig
(shutdown -R) of a modified nPartition after removing cells from it.
Performing a required reboot for reconfig completes cell assignment
changes and unlocks the server’s Complex Profile.
HP Restricted / DRAFT
DRAFT NOV 2001