ServerNet Cluster 6780 Operations Guide (G06.28+, H06.05+)

Glossary
ServerNet Cluster 6780 Operations Guide—525606-003
Glossary-17
node-numbering agent (NNA)
node-numbering agent (NNA). A field-programmable gate array (FPGA) contained within a
single-mode fiber-optic plug-in card (PIC) that translates the node number for each
ServerNet packet entering or exiting the external ServerNet fabrics.
node routing ID. See ServerNet node routing ID.
nonsensitive command. A command that can be issued by any user or program that is
allowed access to the subsystem—that is, a command on which the subsystem
imposes no further security restrictions. For the Subsystem Control Facility (SCF),
nonsensitive commands are those that cannot change the state or configuration of
objects; most of them are information commands. Contrast with sensitive command.
NonStop Kernel operating system. The operating system for NonStop S-series servers.
NonStop Kernel user ID. A user ID within a NonStop S-series server. The Guardian
environment normally uses the structured view of this user ID, which consists of either
the group-number, user-number pair of values or the group-name.user-name
pair of values. For example, the structured view of the super ID is (255, 255). The
Open System Services (OSS) environment normally uses the scalar view of this user
ID, also known as the UID, which is the value (group-number * 256)
+ user-number. For example, the scalar view of the super ID is (255 * 256) + 255
= 65535.
NonStop S-series servers. The set of servers having product numbers beginning with the
letter S. These servers implement the ServerNet architecture and run the NonStop
Kernel operating system.
NonStop ServerNet Cluster. The product name for the collection of hardware and software
components that constitute a ServerNet cluster.
notification. A message that is generated by a resource managed by the OSM software
when something occurs that might affect that resource’s performance. There are two
types of notifications: OSM notifications and service processor (SP) event messages.
NRT. See network routing table (NRT).
object. (1) One or more of the devices, lines, processes, and files in a subsystem; any
entity subject to independent reference or control by one or more subsystems. (2) In
the Subsystem Control Facility (SCF), each object has an object type and an object
name.
object type. The category of Subsystem Control Facility (SCF) objects to which a specific
SCF object belongs. For example, a specific disk has the object type DISK, and a
specific terminal might have the object type SU. Each subsystem has a set of object
types for the objects it manages.
offline. (1) Used to describe tasks that are performed outside of the control of an application
or computer system. (2) Used to describe tasks that require system resources to be
shut down. Contrast with online.