HP NonStop G-Series - Manual (Page 294)

network. Outside that network, the subnetworks appear as part of a single network. The terms
subnetwork and subnet are used interchangeably.
subnetwork
address An extension of the internet protocol (IP) addressing scheme that allows a site to use a single
IP address for multiple physical networks. A subnetwork address is created by dividing the local
part of an IP address into a subnetwork number (identifying a particular subnetwork) and a host
number (uniquely identifying the host system within the subnetwork). The terms subnetwork
and subnet are used interchangeably.
Subsystem
Control Facility
(SCF) An interactive interface for configuring, controlling, and collecting information from its subsystems.
super group The group of user IDs that have group number 255. This group has special privileges. Many
NonStop operating system utilities contain commands or functions that can be executed only
by a member of the super group.
super ID A privileged user in the NonStop operating system environment who can read, write, execute,
and purge all files on the system. The super ID has the user ID 255,255.
synchronous A mode of data communications transmission in which characters are accumulated in a buffer
at the sending terminal and then sent as a block of data. Synchronous transmission normally
uses external clocking provided by a synchronous modem. The clocking scheme assumes that
once transmission starts, characters arrive in a block at a predetermined speed. Contrast with
asynchronous .
SYSnn subvolume A subvolume on the $SYSTEM volume that contains a version of the NonStop operating system
image. The letters nn represent an octal number in the range %00 through %77. There might
be several SYSnn subvolumes, only one of which contains the current OSIMAGE.
system All the processors, controllers, firmware, peripheral devices, software, and related components
that are directly connected together to form an entity that is managed by one NonStop operating
system image and operated as one computer.
See also server and node .
system
configuration
database The database file on the $SYSTEM.ZSYSCONF subvolume that contains configuration
information for objects in the subsystems that are configured by
SCF , including the Kernel
subsystem, the storage subsystem, the ServerNetLan System Area (SLSA) subsystem, and
the Wide Area Network (WAN) subsystem.
system console A PC-compatible workstation on which the OSM client software is running.
system error A condition encountered by the server while performing a command or other operation that
causes the command or operation to fail.
system load To start the system which loads the NonStop operating system image, typically from the
OSIMAGE file in the
SYSnn subvolume of a specified disk volume into the memory of a halted
processor. All processors must be halted before you can perform a system load. To load the
system, use the
OSM Low-Level Link .
system serial
number A unique number assigned to a NonStop server when it is built. OSM uses the system serial
number for connections between the workstation and the server. The system serial number,
typically five or six alphanumeric characters, can be used for ordering and tracking purposes.
T
Tetra 16 topology A tetrahedral topology of NonStop S-series servers that allows a maximum of eight processor
enclosures (16 processors). The maximum number of I/O enclosures allowed by the Tetra 16
topology varies depending on the release version update (RVU) and the server model. Contrast
with
Tetra 8 topology.
Tetra 8 topology A tetrahedral topology of NonStop S-series servers that allows a maximum of four processor
enclosures (eight processors) and eight I/O enclosures. Contrast with Tetra 16 topology.
tetrahedral
topology A topology of NonStop S-series servers in which the ServerNet connections between the
processor
enclosures form a tetrahedron.
294 Glossary