Manualshelf

NonStop System Glossary

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modular I/O
An I/O system that uses I/O adapter modules and provides direct I/O connectivity for all processors
in the core tetrahedron. See also I/O adapter module (IOAM).
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 racks and allows independent evolution and optimization of each kind of module.
module
1. Part of the group, module, and 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.
MON object type
The Subsystem Control Facility (SCF) object type for the storage pool master process.
mount
To make a fileset accessible to the users of an Expand 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 for NonStop S-series enclosures. 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.
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