System Startup, Configuration, and Shutdown Reference Manual (32650-90907)

Glossary
Hewlett-Packard Data-Link Control II (HP-DLC-II)
Glossary
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Hewlett-Packard Data-Link Control II
(HP-DLC-II) A standard that defines the elements
and procedures for a balanced, bit-oriented, Level II
protocol of the Open Systems Interconnection (OSI)
model.
Hewlett-Packard Graphics Language (HP-GL)
The graphics instruction set for Hewlett-Packard
film recorders and plotters.
Hewlett-Packard Interface Bus (HP-IB) A
channel consisting of an HP-IB cable connected to an
HP-IB interface card that is connected to the
system’s backplane. It performs protocol translation
between the CPU and HP-IB. For the 900 Series HP
3000 system up to six devices can be connected to a
single HP-IB channel. Disk drives, tape drives, and
system printers are connected via an HP-IB which is
HP’s implementation of the IEEE standard 488-1975
interface.
High Level Data-Link Control (HDLC) Types of
protocols that eliminate much of the handshaking
(and resultant time-consuming line turnarounds).
histogram A graphical representation of data.
home directory The default group, within an
account, used as the current working directory when
none is specified at logon time.
home group The group to which a user is
automatically logged on to if no other group is
specified with the HELLO or JOB command. If no
home group is assigned, the user must always
specify a group when logging on. The account
manager assigns the home group when a user's
name is first defined.
host computer 1) The primary or controlling
computer in a multiple computer installation. 2) In a
network, the computer that primarily provides
services such as computation, database access, or
special programs or programming languages, to
other users on the network.
implied run The ability to run a program without
explicitly using the RUN command. In MPE/iX it is
not necessary to specify RUN FCOPY.PUB.SYS to
invoke and run the FCOPY program. It is only
necessary to enter FCOPY.
incremental backup A backup strategy where a
full backup is done once a week and partial backups
are done on every other work day.
initial program load (IPL) The initialization
procedure that causes an operating system to begin
operation.
initial system loader (ISL) The software used to
bring up MPE/iX or to perform a memory dump to
tape. It provides a user interface to obtain
information about or to alter the bootpath.
input 1) The data to be processed. 2) The process of
transferring data from external storage to the
computer.
input/output (I/O) The process of, or equipment
used in, transmitting information to or from the
computer.
input priority A number in the range of 1 (lowest
priority) to 14 (highest priority) assigned to input
jobs. The input priority can be assigned by the
system (default is 8) or by the user. Jobs with a input
priority less than or equal to the system outfence
(default 7) are deferred.
INSTALL The MPE/iX initial system loader (ISL)
utility that performs a system load from tape and
builds essential operating system files and data
structures on disk. Equivalent to the MPE V/E
RELOAD operation.
interactive session A session that allows users to
enter commands and data at the terminal and
receive an immediate response. Interactive sessions
are useful for data entry and retrieval, text editing,
or program development where direct dialog with
the computer is preferred.
interactive access capability (IA capability) A
capability assigned to accounts and users allowing
users to initiate sessions with the HELLO command.
interactive user A user who enters commands at a
terminal.
I/O bay A cabinet containing the card cages and
device controller boards for peripherals connected to
the HP 3000.