NonStop S-Series Hardware Installation and FastPath Guide (G06.25+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001
Glossary-65
MIPS RISC instructions
MIPS RISC instructions. Register-oriented 32-bit machine instructions in the MIPS-1 RISC
instruction set that are native to and directly executed on TNS/R systems. MIPS RISC
instructions do not execute on TNS systems. Contrast with TNS instructions.
Accelerator-generated MIPS RISC instructions are produced by accelerating TNS
object code. Native-compiled MIPS RISC instructions are produced by compiling
source code with a TNS/R native compiler.
MIPS RISC word. An instruction-set-defined unit of memory. A MIPS RISC word is 4 bytes
(32 bits) wide, beginning on any 4-byte boundary in memory. Contrast with TNS word
and word.
mirrored disk or volume. A pair of identical disk drives that are used together as a single
logical volume. One drive is considered primary, and the other is called the mirror.
Each byte of data written to the primary drive is also written to the mirror drive. If the
primary drive fails, the mirror drive can continue operations. See also volume.
missed address file (MAF). A file used by the HP NonStop™ operating system during
memory caching operations.
MMF PIC. See multimode fiber-optic (MMF) plug-in card (PIC).
MMF ServerNet cable. See multimode fiber-optic (MMF) ServerNet cable.
MO. Maintenance orchestrator.
mode. The set of attributes that specify the type and access permissions for a file. See also
file mode.
modular cabinet. A cabinet with an integrated standard 19-inch rack equipped with a
power distribution unit (PDU), doors, slides, brackets, castors, leveling pads, and
optional side panels. See also cabinet.
modular ServerNet expansion board (MSEB). A ServerNet expansion board (SEB) that
uses plug-in cards (PICs) to provide a choice of connection media for routing
ServerNet packets.
modular system. A complete server system in which processors, storage, input/output
components, and interconnect components are separate, self-contained, replaceable
modules. A modular system occupies one or more standard racks and allows
independent evolution and optimization of each kind of module.
module. (1) Part of the group, module, slot naming convention for uniquely identifying the
logical location of a component within a system. A module is a subset of a group, and it
is usually contained in an enclosure. A module contains one or more slots. A module
can consist of components sharing common interconnect, such as a backplane, or it
can be a logical grouping of components performing a particular function. See also
group. (2) A set of I/O devices or services that share a common protocol and can be
controlled by a single module driver in the extensible I/O (XIO) subsystem.