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

A Special Considerations
This appendix covers the following topics:
• “Assumed Values in icapstatus Command” (page 157)
• “Upgrading to Instant Capacity version B.06.x or later (HP-UX)” (page 158)
• “Dual-Core Support in Instant Capacity Systems” (page 159)
• “New Partition Creation and Instant Capacity” (page 160)
• “Implications of Removing a Cell from an Instant Capacity System ” (page 160)
• “Shutting Down a Partition with Instant Capacity Cores” (page 161)
• “Instant Capacity and Reinitializing the nPartition (Genesis Partitions)” (page 161)
• “par Commands from PC System Management Station” (page 161)
• “Instant Capacity Compatibility with Processor Sets (HP-UX)” (page 161)
• “Configuring Email on Instant Capacity Systems” (page 162)
• “Measurement Software and Instant Capacity Systems” (page 166)
• “Dynamic Processor Resilience (HP-UX)” (page 166)
• “Security Issues” (page 167)
Assumed Values in icapstatus Command
The icapstatus command might make assumptions on the number of active cores and amount
of active memory, depending on certain system conditions. If values are assumed, the icapstatus
command output contains an asterisk next to the appropriate field.
Assumed Processor Values
Occasionally, the output of the icapstatus command contains an asterisk (*) next to the value
in the Actual Active Cores field (under the section Allocation of Instant Capacity
Resources among the nPartitions). The asterisk appears in the output whenever a nonlocal
partition appears to be active, but the icapd daemon is not reporting system information. Some
examples that can cause this situation include:
• The absence of a compatible version of the Instant Capacity software on a nonlocal partition
• No space left in /var on the nonlocal partition prevents icapd from communicating system
information
• A nonlocal partition shut down for an extended period of time with shutdown or reboot,
without the -R -H options (which brings the cells to an inactive state)
• A nonlocal partition running an operating system that is not HP-UX or OpenVMS (for example,
Windows or Linux)
In these cases, the Instant Capacity software on other partitions identifies all cores in the nonlocal
partition as active. In addition to the asterisks in the output of icapstatus, this can affect the
following:
• Temporary capacity consumption
• The ability to change the complex with parmodify, parmgr, or parcreate commands
• Core activation with the icapmodify command
• System noncompliance
Assumed Values in icapstatus Command 157