Windows nPartition Guide v5.5

Table Of Contents
NOTE: You must include the correct remote administration options when issuing par
commands (-h and -g for IPMI over LAN connections; -h and -u for WBEM/WMI
connections). For a complete explanation of these options, see the command description in
“nPartition Commands Reference” (page 89).
3. To modify cell attribute values, use the parmodify -p# -m#... command and specify
the new cell attributes as part of the -m option.
You must specify both the nPartition (-p# where # is the nPartition number) and the cell
(-m#... where # is the cell number).
4. Reboot the nPartition to use the cells’ new configuration (the new use-on-next-boot values).
If you have changed any cell use-on-next-boot settings for the nPartition then reboot the
nPartition in either of two ways:
Use the Windows shutdown /r command to perform a standard reboot.
If you have only changed use-on-next-boot values from y to n, then perform a reboot.
Any cells set to not be used will still be assigned to the nPartition but will not be used
(will not rendezvous) in the nPartition.
Use the Windows shutdown /r command to perform a reboot for reconfig.
If you have changed any use-on-next-boot values from n (do not use on next boot) to y
(use the cell on next boot), then you must perform a reboot for reconfig to allow the
currently inactive cells to reboot and rendezvous when the nPartition reboots.
Configure and deconfigure processors (CPUs)
You can configure and deconfigure processors from any cell that is assigned to an nPartition.
Deconfiguring a processor causes it to not be available for use by the cell or its nPartition.
Whenever you configure or deconfigure processors, you must reboot the corresponding nPartition
for the configuration change to take effect.
NOTE: Configuring and deconfiguring processors can be restricted based on any capacity on
demand (iCOD) or pay per use (PPU) contracts for the server complex.
Configure and deconfigure processors using the following procedure:
Procedure 4-48 Configuring and deconfiguring processors (CPUs) [EFI shell]
From the EFI Shell environment, use the cpuconfig command to configure or deconfigure
processors in the local nPartition.
1. Access the EFI Shell environment for the nPartition whose processors you want to configure
or deconfigure.
Log in to the MP and enter CO to access the Console list. Select the nPartition console.
When accessing the console, confirm that you are at the EFI Boot Manager menu (the main
EFI menu). If at another EFI menu, select Exit from the sub-menus until you return to the
screen with the EFI Boot Manager heading.
From the EFI Boot Manager menu, select EFI Shell to access the EFI Shell environment.
2. Enter the cpuconfig command with no arguments to list the current processor
configurations for all cells assigned to the local nPartition.
3. Use the cpuconfig command to change processor configurations for any of the cells assigned
to the local nPartition.
cpuconfig cell cpu off deconfigures the specified processor (cpu) on the specified
cell (cell).
86 Using Other Tools to Manage nPartitions