User's Manual

Shutting Down a Partition with Instant Capacity Cores
The Instant Capacity software saves information about the number of active cores for each
partition, and this information expires over time. If the partition is not active (but the hardware
is powered up), Instant Capacity software on other partitions assumes that all cores in the inactive
partition are active unless it can detect otherwise. For details about these assumed processor
values, see “Assumed Values in icapstatus Command” (page 192).
These are the general rules the Instant Capacity software uses:
• If the partition is to be shut down for less than 12 hours, no action is necessary.
• If the partition is to be shut down for more than 12 hours, consider powering the cells off,
or shutting the partition down using the shutdown -R -H command.
• If the partition crashes or shuts down abnormally, reboot the partition within 12 hours or
power it off.
IMPORTANT: If you shut down a partition for 12 hours or more, also power it off to avoid
additional charges. To power off the partition, execute the PE command from the system MP.
On HP-UX systems, always use the shutdown command when shutting down or rebooting an
Instant Capacity partition. For information about the shutdown command, see shutdown(1M).
On OpenVMS systems, always use the sys$system:shutdown.com procedure when shutting
down or rebooting an Instant Capacity partition.
198 Special Considerations