Technical data

Introduction to nPartitions
Rebooting to Implement nPartition Changes
HP System Partitions Guide: Administration for nPartitions—rp7410
EMSP—[e-mail]
48
Rebooting to Implement nPartition Changes
Currently HP-UX 11i supports nPartitions on HP servers that support
them, including HP rp8400 and HP Superdome servers.
Once an nPartition has booted and is active, the partition has a fixed set
of active hardware resources. In order to establish a different set of
active hardware resources for an nPartition you must reboot the
partition, as described below.
You can add and remove cells from an active, booted nPartition, however
you only can add or remove inactive cells without having to reboot the
partition.
To remove an active cell from a partition, or to make a newly added cell
or inactive cell active, you must perform a reboot for reconfig of the
partition.
The following list describes situations where you may need to reboot an
nPartition to implement changes.
• Perform a reboot for reconfig (shutdown -R) of an nPartition in the
following situations.
— When you want to add one or more cells to a partition.
Newly added cells initially are inactive when assigned to an
nPartition. To allow the new cells to rendezvous (join the partition
as active members) perform a reboot for reconfig.
— When you remove one or more cells from a partition.
Removing an active cell requires a partition reboot for reconfig,
but removing an inactive cell does not require a partition
reboot for reconfig. Inactive cells are removed immediately.
— When you change a cell’s use-on-next-boot value from “n” (no, do
not use) to “y” (yes, use the cell).
A reboot for reconfig permits the cell to rendezvous into the
partition and become active; see below.
— When you want to allow a currently inactive cell to become active.
A reboot for reconfig reboots all cells, allowing them an
opportunity to join (rendezvous) the partition as active members.
HP Restricted / DRAFT
DRAFT NOV 2001