HP-UX System Administrator's Guide: Overview HP-UX 11i v3 (B3921-90011, September 2010)

operating system Software that controls the resources of a system (or partition). An instance of HP-UX running
in an nPartition, vPars virtual partition, or HPVM virtual machine
Other operating systems commonly found on HP Integrity servers include Linux and Microsoft
Windows.
partition A grouping of server resources dedicated to an instance of an operating system.
See also nPartition, virtual partition, Integrity VM guest.
persistent device
special file
A device file for mass storage devices (usually disks), that is associated with a LUN hardware
path, and thus transparently supports agile addressing and multipathing. A persistent device
special, therefore, remains unchanged if the LUN it is associated with is moved from one host
bus adapter to another, or if a mass storage device fails and is replaced.
primary swap The initial location made available for paging operations during the system startup sequence.
Defined using the swapon command. See swapon(1M).
See also secondary swap.
print destination A queue associated with a printer or printer class. Many of the Line Printer Spooling System
commands, and other applications that provide printing services, use the a print destination
to identify which printer or group of printers to affect. See the manpages lpadmin(1M) and
lpalt(1M).
See also printer class, Line Printer Spooling System and print queues.
print queues A queue within the Line Printer Spooling System associated with a printer or printer class, used
to hold print requests until they are printed.
print requests A print job submitted to the Line Printer Spooling System.
See also Line Printer Spooling System.
printer class A print queue representing a group of one or more printers; treated as a single print destination.
Print requests submitted to a printer class (when printed) will be sent to one of the available
printers defined in the class. The Line Printer Spooling System determines which printer is
actually used to print any given request in the class queue.
printer interface
scripts
A script, used by the Line Printer Spooling System, to output print requests to a printer. When
defined in the Line Printer Spooling System, a printer interface script is created which is a copy
of a printer model script. Once created, the printer interface script can then be customized to
tailor it to your needs.
printer model
scripts
Scripts — usually supplied as part of HP-UX or by a printer vendor — used as templates
(models) from which printer interface scripts are created at the time printers are configured
into the Line Printer Spooling System.
PRM groups A collection of users and applications that are joined together and assigned certain amounts of
CPU, memory, and disk bandwidth resources.
processor A physical piece of silicon (a “chip”) containing one or more cores.
processor set
A group of cores, defined by the psrset command (or indirectly higher level products such
as the Workload Manager - WLM), for use as an independent scheduling domain. The default
processor set consists of all the cores on the system (server or partition).
pseudo swap System memory used for swap space that allows users to execute processes in memory without
allocating physical swap. Pseudo-swap is controlled by the operating-system parameter
swapmem_on which by default is set to 1, enabling pseudo-swap.
pseudodevice A virtual device, emulated by the operating system, not corresponding to a physical device. In
HP-UX 11i version 3, examples of pseudodevices include:
/dev/null
Receives and ignores all input.
/dev/random
A source of random numbers.
There are many others.
RAID An acronym meaning Redundant Array of Independent Disks. RAID defines various ways
(known as RAID Levels) to group mass storage devices to achieve data redundancy or read/write
performance.
114 Glossary