MPE/iX Glossary of Terms and Acronyms (32650-90887)

Chapter 1 55
Glossary of Terms
removable disk A disk that can be removed from disk drives and transported to another
disk drive.
removable packs See private volumes.
repeater A data transmission device used to amplify a signal.
report A display of information about accounts, groups, and users, generated with
the REPORT command. The information, listed in columns, contains both
the current value and maximum limit for file space (in sectors), CPU time
(in seconds), and connect time (in minutes). System managers may report
on all groups in all accounts; account managers may report on all groups
in their own account; standard users may report on only their logon group.
report program generator (RPG) A computer programming language designed to
provide report-writing functions.
required parameter A parameter that is required when entering a command or calling
an intrinsic. In reference manuals, required parameters are surrounded by
braces ({}).
rerouting Ability to reroute messages around inoperative links in a network.
resolution A measure of image sharpness; it can be expressed as a number of lines or
pixels per unit length.
resource Any device or item used by a computer, for example, I/O devices, disk files,
or programs.
resource identification number (RIN) A number identifying a user-defined resource.
Users are normally allowed to lock only a single RIN, which means they
may have exclusive access to one resource at a time, such as an I/O device,
a file, or a program.
resource sharing A network that makes elements at each node accessible from other
nodes in the network. These elements may include disk files, printers,
magnetic tapes, terminals, and other programs.
response center support (RCS) An HP support agreement coverage that provides
telephone assistance with software usage and problems.
restricting data A way of limiting access to data by grouping data into volumes, volume
classes, and volume sets.
restore The process of retrieving user files from tapes or serial disk and writing
them to disk. Restoring is executed with the RESTORE command.
resume To restart execution of a procedure or program after it has been
suspended.
ring A point-to-point network topology. The ring is a string topology with an
additional link between the end nodes. The store-and-forward delay is half
that of a string topology because the maximum number of intervening
nodes is halved. The ring topology is suited for accessible from all nodes.
Ring networks are less vulnerable than string networks. If any one link
fails, all the nodes can still communicate by rerouting around the failure.
The opposite of string.