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NonStop S-Series Server Description Manual (G06.24+)

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Glossary
HP NonStop S-Series Server Description Manual—520331-003
Glossary-60
mirrored disk or volume
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. (1) 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, there is exactly one module in a 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.
MON object type. The Subsystem Control Facility (SCF) object type for the Storage
Management Foundation (SMF) master process.
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).