NonStop S-Series Planning and Configuration Guide (G06.25+)

Glossary
HP NonStop S-Series Planning and Configuration Guide—523303-015
Glossary-63
mount
mount. To make a fileset accessible to the users of a node.
mount point. In the Open System Services (OSS) file system, a directory that contains a
mounted fileset. The mounted fileset can be in a different file system.
MRouter. A field-programmable gate array (FPGA) or application-specific integrated circuit
(ASIC) that is part of the serial maintenance bus (SMB) architecture. The MRouter
distributes the SMB throughout a group.
MSEB. See modular ServerNet expansion board (MSEB).
MSEB CBB. See MSEB common base board (CBB).
MSEB common base board (CBB). In modular ServerNet expansion boards (MSEBs), the
printed wiring assembly (PWA) that plug-in cards (PICs) are installed on.
MSEB port. A connector on modular ServerNet expansion boards (MSEBs) used for
ServerNet links. An MSEB has four fixed serial-copper ports and six plug-in card (PIC)
slots that accept a variety of connection media. See also SEB port
.
MSGMON. See message monitor process (MSGMON).
MSP. See master service processor (MSP).
multifunction I/O board (MFIOB). A ServerNet adapter that contains ServerNet
addressable controllers (SACs) for SCSI and Ethernet; a service processor; ServerNet
links to the processor, to the two ServerNet adapter slots, and to one of the ServerNet
expansion board (SEB) slots; and connections to the serial maintenance bus (SMB),
which connects components within an enclosure to the service processor.
multilane link. A communication link between HP NonStop™ Cluster Switches that can
consist of multiple ServerNet cables. Two-lane links and four-lane links are examples
of multilane links.
multimode fiber-optic (MMF) plug-in card (PIC). A plug-in card (PIC) for the modular
ServerNet expansion board (MSEB) and I/O multifunction (IOMF) 2 customer-
replaceable unit (CRU) that supports the multimode fiber-optic (MMF) interface.
multimode fiber-optic (MMF) ServerNet cable. A fiber-optic cable that either allows more
than one mode to propagate or supports propagation of more than one mode of a
given wavelength. MMF ServerNet cable typically supports shorter transmission
distances than single-mode fiber-optic (SMF) ServerNet cable
.
multiplexed. The action of separating data traffic from one line onto several distinct lines or
of combining data traffic from several distinct lines onto one line.
mutex. See mutual exclusion (mutex).
mutual exclusion (mutex). An operating mode with interrupts disabled.