HP-UX System Administrator's Guide: Overview

logical
volume
A subdivision of a volume group, a logical volume can span multiple physical volumes or represent
only a portion of one physical volume.
The size of a logical volume is measured in units called extents. The size of logical volumes can
be altered after they are initially created. Logical volumes can be extended and, if their contents
permit, reduced.
Once created, logical volumes can be treated just like disk partitions. They can be used for file
systems, swap space, as dump devices, or for raw disk access.
LUN
hardware path
A virtual hardware path that represents the device itself, not the hardware path to it. A LUN
hardware path represents all physical paths (“lunpath hardware paths”) to the LUN it represents.
The first path element in a LUN hardware path is 64000, followed by a virtual bus address and
virtual LUN ID. For example: 64000/0xfa00.0x22.
lunpath
hardware path
An individual physical hardware path to a mass storage device (usually a disk). Lunpath hardware
paths are composed of a series of bus-nexus addresses separated by / (slash) characters leading
up to the Host Bus Adapter (HBA). Beneath the HBA, additional address elements are represented
in hexadecimal. The first elements represent a transport-dependent target address. The final
element is a LUN address, which is a 64-bit representation of the LUN identifier reported by the
targeted device.
See also LUN hardware path and persistent device special file.
major number The part of a device special file that determines whether the file is used for block access or character
access and also used to determine which device driver to use when communicating with the
device.
managed
systems
Any system managed by HP Systems Insight Manager, including servers, desktop PCs, and
Remote Insight Boards.
management
domain
A collection of resources called managed systems that have been placed under the control of the
HP SIM. Each Central Management Server is responsible for a management domain. The managed
systems can belong to more than one management domain.
See also Central Management Server.
metrocluster See metropolitan cluster.
metropolitan
cluster
A cluster that is geographically dispersed within the confines of a metropolitan area requiring
right-of-way to lay cable for redundant network and data replication components.
minor number The part of a device special file that identifies the location of the interface to which a device is
attached and defines driver-dependent characteristics. This information is organized by specific
bit assignments.
See also device special files and major number.
modules See kernel modules.
mount points Directories in the HP-UX directory tree where file systems are logically attached. When mounted,
the directory that is the root of a file system’s directory tree is represented by the HP-UX directory
to which it is mounted. See mount(1M).
network
based printer
A printer connected directly to a network and having its own network interface (such as an HP
JetDirect interface card) and network address. All printing to a network based printer must travel
over the network.
See also remote printer.
nodes (Serviceguard) Individual systems in a Serviceguard cluster. Systems could be standalone servers
or instances of HP-UX running in a partition on a server.
(Networking) (Individual instances of HP-UX (or other operating systems) on a network, each
identified by its own hostname and one or more IP addresses.
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