nPartition Administrator's Guide

Cell Online Operation
Floating cells can be added/deleted and then activated/deactivated online to/from a partition
without a reboot.
Adding Cell Online
Cell online addition applies only to a cellular complex. If an nPartition in the cellular complex
is running HP-UX 11.31, a cell elsewhere in the complex can be assigned and added to the
nPartition without bringing down the OS.
When the new cell is added as a floating cell, any memory on the cell is configured as Cell Local
Memory (CLM), regardless of the clm_value attribute established by the parmodify command.
The new cell may optionally have an I/O expander attached to it. If so, the host bus adapter is
configured into the nPartition, but the individual I/O adapters are not configured unless the
system administrator issues a separate subsequent command to do so.
Deleting Cell Online
Cell online deletion applies only to cellular complex. If an nPartition has cells with only cell local
memory (floating cell) it can be removed from the nPartition without bringing down the OS. The
cell must not have I/O devices attached to it for the deletion to happen.
Overview of Managing nPartitions
This section provides overviews of common nPartition management tasks.
The following task overviews are given here:
• “Basics of Listing nPartition and Complex Status”
• “Basics of nPartition Creation”
• “Basics of nPartition Modification”
• “Basics of nPartition Booting and Resetting”
Basics of Listing nPartition and Complex Status
You can list server complex hardware details and nPartition configuration details using the
following tools and commands.
For details see Chapter 8 (page 225).
• Service processor (MP or GSP) methods for listing hardware and nPartition status include
the following commands, which are available from the service processor Command menu.
— CP — List nPartition configurations, including all assigned cells.
— PS — List cabinet, power, cell, processor, memory, I/O, and other details.
— IO — List connections from cells to I/O chassis on HP Superdome servers.
— ID — List product and serial numbers.
• EFI Shell methods (available only on HP Integrity servers) for listing hardware and nPartition
status include the following commands. Hardware and nPartition information displayed
by the EFI Shell is limited to the local nPartition.
— info sys — List the local nPartition number and active cell details.
— info io — List the I/O configuration.
— info mem — List memory details.
— info cpu — List processor details.
28 Getting Started with nPartitions