HP-UX System Administrator's Guide: Overview

• Implemented at the cell board level.
• Provides both functional and electrical isolation.
• Partitions are referred to as nPartitions.
• nPartitions can be further sub-divided using Software Partitioning.
• On servers that support them, nPartitions can run HP-UX, Linux, Microsoft
Windows, or all of these operating systems (in separate partitions).
Software Partitioning
vPar 3vPar 2vPar 1
Software partitioning provides for finer grained partitioning than nPartitions. HP offers
two products to accomplish software partitioning:
1. vPars - Virtual Partitions
2. Integrity VM - Integrity Virtual Machines
Using either of these two products, you can partition your server at the processing core
level. Integrity VM even allows sub-core-level partitioning.
Key Features of Software Partitioning Important features of software partitioning
include:
• Implemented at the processing core level (for vPars), or by time slices (for Integrity
VM)
• Provides functional but not electrical isolation
• Partitions are referred to as:
— vPars (if implemented using the Virtual Partitions product)
— guest operating systems (if implemented using the Integrity Virtual Machines
product)
Partitioning (Multiple Operating Systems, One Multi-processor Server) 39