HP Instant Capacity Version 10.x User Guide (5900-1581, March 2011)

If your system has only one active processor, that processor is considered a monarch processor
and it cannot be replaced on line. A reboot of the system is required to replace the failing monarch
processor.
If there are multiple active processors in your system, one of them is designated as the monarch
processor, and the other (nonmonarch) processors can be replaced on line. If the monarch processor
fails, it cannot be replaced without a reboot.
Replacement of Failed Cores on OpenVMS
If a core is experiencing correctable errors, shut it down and start up another Instant Capacity
core, thereby keeping the active-core count constant.
If a core experiences a fatal problem leading to a system crash, upon reboot you can start another
Instant Capacity core, thereby replacing the failed core and keeping the active-core count constant.
Failed OpenVMS Primary Processors
An OpenVMS primary processor that is failing cannot be instantly replaced.
If your system has only one active processor, it is considered a primary processor and it cannot
be replaced on line. A reboot of the system is required to replace the failing primary processor.
If there are multiple active processors in your system, one of them is designated as the primary
processor and the other (nonprimary) processors can be replaced on line. If the primary processor
fails, it cannot be replaced without a reboot.
Replacement of Failed Cores 53