HP Integrity Virtual Machines Manager Version 4.0 Getting Started Guide

Integrity Virtual
Machines
HP Integrity Virtual Machines (Integrity VM). The HP product that allows you to install and
run multiple systems (virtual machines) on the same physical host system.
legacy addressing The storage device addressing model that uses the device special file (DSF) path as defined in
HP-UX 11i v2 and earlier versions. In contrast to the agile addressing model introduced with
HP-UX 11i v3, the legacy device special file (DSF) is bound to a specific hardware path to a
storage device. For this reason, a device with multiple paths is represented by several legacy
DSFs. If the physical storage device is reconnected to a host through a different host bus adapter
(HBA) or a different target port, the address represented by the DSF is affected, requiring
reconfiguration of applications, volume managers, or file systems. Likewise, if additional paths
are offered to a given LUN (through the addition of a new SCSI controller or new SCSI target
paths), an equal number of additional DSFs are required to address them.
See also agile addressing.
localnet A vswitch created by default when Integrity Virtual Machines is installed on a VM Host. The local
network created by this vswitch can be used for communications among guests but not for
communication between the VM Host and any guest or between any external system and a
VM guest.
managed node A system running under HP SIM. Systems become managed nodes through the HP SIM
discovery mechanism.
managed system See managed node.
NIC Network interface card. Also called LAN card, LAN adapter, or PPA.
processor Also referred to as the central processor unit (CPU), a processor is the hardware component in
a computer that processes instructions and plugs into a processor socket. A processor can
contain more than one core.
See also core.
Serviceguard HP Serviceguard. A product that allows you to create high-availability clusters of HP 9000 or
HP Integrity servers. Serviceguard can be used to manage virtual machines as Serviceguard
packages. A Serviceguard package groups application services (individual HP-UX processes)
together and maintains them on multiple nodes in the cluster, making them available for failover.
shared vswitch A vswitch that can be used by more than one active virtual machine.
vCPU Virtual CPU. A single-core virtual processor in a virtual machine.
See also core, processor.
virtual CPU See vCPU.
virtual machine A software entity provided by Integrity Virtual Machines. Integrity Virtual Machines allows a
single server or nPartition to act as a VM Host for multiple individual virtual machines, each
running its own instance of an operating system (called a guest OS). Virtual machines (also
called VMs) are servers in the Virtual Server Environment (VSE).
virtual machine
console
The user-mode application that provides console emulation for virtual machines. Each instance
of the virtual machine console is one console session for its associated virtual machine.
virtual network A LAN that is shared by the virtual machines running on the same VM Host or in the same
Serviceguard cluster.
virtual switch See vswitch.
VLAN Virtual LAN. Defines logical connectivity instead of the physical connectivity defined by a
LAN. A VLAN provides a way to partition a LAN logically such that the broadcast domain for
a VLAN is limited to the nodes and switches that are members of the VLAN.
VM See virtual machine.
VM Host The virtual machine host system.
vswitch Virtual switch. Refers to both a dynamically loadable kernel module (DLKM) and a user-mode
component implementing a virtual network switch. The virtualized network interface cards
(NICs) for guest machines are attached to the virtual switches. By associating the vswitch with
a physical working LAN on the VM Host, you provide the guest with the capability of
communicating outside the localnet.
WBEM Web-Based Enterprise Management. A set of web-based information services standards
developed by the Distributed Management Task Force, Inc. A WBEM Provider offers access to
96 Glossary