HP vPars and Integrity Virtual Machines V6.1 Administrator Guide

can be assured of identical configurations, including the hardware devices backing each guest's
virtual devices. Testing upgraded software and system modifications is a simple matter of entering
a few commands to create, monitor, and remove virtual machines.
Integrity VM can improve the availability and capacity of your data center. Virtual machines can
be used to run isolated environments that support different applications on the same physical
hardware. Application failures and system events on one virtual machine do not affect the other
virtual machines. I/O devices allocated to multiple virtual machines allow more users per device,
enabling the data center to support more users and applications on fewer expensive hardware
platforms and devices.
CAUTION: In V6.1, HP supports a vPar only or VM only environment, though creation of one
type of virtual server when the other type already exists might be allowed by Integrity VM commands
in some cases. You are strongly advised not to attempt creation of mixed vPar/VM configurations.
A configuration of mixed vPars and VMs is not supported and might lead to unexpected behavior.
1.5 New and changed terminology
The following new and changed terminology applies to the “converged” vPars and Integrity VM
V6.1 product:
• HP Integrity Virtual Machines Manager is now named HP Integrity Virtual Server Manager
• The VM Host is now named Virtualization Services Platform (VSP).
• A guest is the guest operating system that is installed on the VM or vPar.
Virtual machines run on the same physical machine as the VSP and appear to be ordinary HP-UX
processes. Each virtual machine emulates a real Integrity machine, including firmware. While
virtual partitions are granted direct access to CPU and memory. The generalized term virtual
machine is used throughout these documents, which refers to either type of machine container. A
virtual machine can be referred to as a guest, VM, or vPar. A VM specifically refers to a virtual
machine with virtualized (shared) CPU, memory and I/O resources, while a vPar specifically refers
to a virtual partitioning of VSP CPU and memory resources and is granted direct (non virtualized)
access to CPU and memory. The operating system running in a virtual machine is referred to as
the guest operating system, or guest OS.
For more definitions and product descriptions, see “Glossary”
1.6 vPars and Integrity VM media
The HP-UX vPars Integrity VM V6.1 software is distributed on the HP-UX 11i v3 Operating
Environment media with the Virtual Server OS (VSE-OE) and the Data Center OE (DC-OE). To
install vPars and Integrity VM, select the optional software bundles for HP-UX vPars and Integrity
VM (BB068AA) and Virtualization Base bundle (VirtualBase) prior to installing or updating HP-UX.
NOTE: If you are installing the HP-UX vPars and Integrity VM bundles BB068AA and VirtualBase,
you must also install the HP-UX GUID Manager bundle GUIDMGR.
The HP-UX vPars and Integrity VM software for HP-UX 11i v3 is delivered in the following ways:
• As a stand-alone product on the HP-UX 11i v3 Application Software (AR) DVD
• As a product included in the HP-UX 11i v3 VSE-OE
• As a product included in the HP-UX 11i v3 DC-OE
• As a product included in the HP-UX 11i v3 Matrix OE
1.7 Types of I/O
The vPars and Integrity VM V6.1 release supports two types of I/O: accelerated virtual I/O (AVIO)
and direct I/O (DIO) networking. With AVIO, I/O devices are para-virtualized. The I/O device
16 Introduction