HP-UX Virtual Partitions Administrator Guide (includes A.05.07) (5900-1229, September 2010)

NOTE: In certain situations when using vPars with SAS disks on HP Integrity platforms,
the vparstatus -v and setboot commands may show different boot disk paths in vPars
mode. This is normal, and is due to the disks being scanned in a different sequence at boot
time.
You may see different boot disk paths for SAS disks reported by the vparstatus -v and
setboot commands in vPars mode after booting into nPars mode and then booting back
into vPars mode. For example:
— A virtual partition is ignited from a SAS disk and booted in vPars mode, and the
vparstatus -v command shows the boot disk path as A.
— If the system is booted back to nPars mode, the boot path may change to B, which is
different from A due to a different scan order. This would also change the boot path to
B in the vPars database (/stand/vpdb).
— After booting back to vPars mode, vparstatus -v for this virtual partition shows B
as the boot path and setboot still shows A.
Both boot paths (A and B) refer to the same SAS disk path.
• vPars and Dynamic nPartition Operations Dynamic nPartitions operations cannot be
performed to an nPartition that is running Virtual Partitions. For more information on
dynamic nPartitions, see the HP-UX 11i v3 Dynamic nPartitions white paper at: http://
docs.hp.com/en/10907/dynamic_nPars_WP.pdf.
• Support for vPars Configuration Based on Locally Optimized Reference Architecture (LORA)
on Multi-Cell Integrity Systems LORA is a framework for increasing system performance
by exploiting the locality domains in HP servers with Non-Uniform Memory Architecture
(NUMA). LORA consists of configuration rules, tuning recommendations, HP-UX 11i v3
enhancements, and tools to support them. For more information on LORA, see “Planning
Your Virtual Partitions for LORA Support” (page 65).
Ordering vPars
For the latest information on ordering vPars, see the HP-UX Virtual Partitions Release Notes and
the HP-UX Virtual Partitions Ordering and Configuration Guide.
NOTE: The free product known as VPARSBASE is obsolete and is no longer available or
supported.
26 Introduction