OSM Service Connection User's Guide (G06.30+)

the external Y fabric of a ServerNet cluster.
See also SP logical name.
logical processor
The combination of equivalent processor elements in the Blade Elements that are running
in the same instruction stream in loose lock-step.
Logical Unit Number (LUN)
A SCSI convention used to identify elements. The host sees a virtual disk as a LUN. The
LUN address a user assigns to a virtual disk for a particular host will be the LUN at
which that host will see the virtual disk.
low-level link (LLL)
A connection between the OSM client software running on a workstation and the master
service processors (MSPs) on the server. When the operating system is not running,
communication must take place over a low-level link. You can also communicate with a
server over a low-level link when the operating system is running. Certain tasks can be
performed only using a low-level link.
See also service connection.
M
maintenance entity
A processing entity in a single HP NonStop" system that collects state information,
environmental information, and failure data about the system resource or resources for
which the maintenance entity is responsible. A maintenance entity can include both
physical and software components, and a system can contain multiple maintenance
entities. For example, each I/O adapter module (IOAM) and processor switch has its own
maintenance entity.
maintenance switch
The Ethernet switch that links the maintenance entities in various modular components to
the OSM interface.
Management window
The Management window provides an easy way to browse through a complex system
installation. It contains four panes.
The left pane is the tree pane. It displays a hierarchical tree structure containing server or
cluster resources that you can select.
The lower-right pane is the overview pane. It displays only the high-level system objects
(such as internal fabrics and groups). When you click the Cluster tab, the overview pane
displays only the high-level cluster objects (external fabrics, local node, and remote