6760 ServerNet/DA Manual

Glossary
6760 ServerNet/DA Manual—424879-003
Glossary-53
message monitor process (MSGMON)
message monitor process (MSGMON). A helper process for the ServerNet cluster monitor
process (SNETMON) that runs in each processor on every node of a ServerNet
cluster. MSGMON is started by the persistence manager process, $ZPM. It performs
duties for SNETMON in those instances where SNETMON needs an agent in each
system processor. In addition, MSGMON monitors the connections within the
processor and reports changes back to SNETMON when required.
MFIOB. See multifunction I/O board (MFIOB).
MIC. See Media Interface Connector (MIC).
microcode. Any machine code or data that can run in a microprocessor. HP produces two
types of microcode for HP NonStop™ S-series systems: volatile and nonvolatile.
Volatile microcode is loaded into the volatile random-access memory (RAM) of some
types of printed wiring assemblies (PWAs) and is not retained in a host PWA when
power to the PWA is interrupted. For nonvolatile microcode, see firmware
. See also
millicode
.
millicode. RISC instructions that implement various TNS low-level functions such as
exception handling, real-time translation routines, and library routines that implement
the TNS instruction set. Millicode is functionally equivalent to TNS microcode
.
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
.
MMF PIC. See multimode fiber-optic (MMF) plug-in card (PIC).
MMF ServerNet cable. See multimode fiber-optic (MMF) ServerNet cable.
mode. The set of attributes that specify the type and access permissions for a file. See also
file mode
.
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.
module. A set of components sharing a common interconnection, such as a backplane. A
module is a subset of a group, and it is usually contained in an enclosure. In an HP
NonStop™ S-series server, a group contains exactly one module.
MON object type. The Subsystem Control Facility (SCF) object type for the Storage
Management Foundation (SMF) master process.
mount. In the Network File System (NFS), to make a fileset accessible to the users of a
node.