CP6100 Configuration and Management Manual

Glossary
CP6100 Configuration and Management Manual—426741-003
Glossary-6
IPM
local address, which identifies a host within a network. A network address is
concatenated with a host address to form the IP address and uniquely identify a host
within a network. IP routes data between source and destination IP addresses.
IPM. See interim product modification (IPM).
Kernel subsystem. In G-series and H-series RVUs, the subsystem for configuration and
management of the Subsystem Control Facility (SCF) subsystem managers that are
generic processes, some system attributes, and the ServerNet X and Y fabrics.
Kernel subsystem manager process. The generic process that starts and manages other
generic processes, some system attributes, and the ServerNet X and Y fabrics in
G-series RVUs. The $ZZKRN Kernel subsystem manager process is started and
managed by the $ZPM persistence manager process. See also generic process.
line. The specific hardware path over which data is transmitted or received. A line can also
have a process name associated with it that identifies an input/output process (IOP) or
logical device associated with that specific hardware path.
line interface unit (LIU). A dual-ported unit consisting of two parts: a communications line
interface processor (CLIP) and a line interface module (LIM). An LIU can communicate
with either the primary or the backup processor, providing fault tolerance. When it is a
component of the communications subsystem, an LIU communicates with either
processor through either of a pair of communications interface units (CIUs).
LIU. See line interface unit (LIU).
logical device name. The name assigned to an I/O process during its configuration. Other
processes use the logical device name when issuing OPEN, READ, WRITEREAD, and
CLOSE Guardian procedure calls to the I/O process.
logical device number. A number that identifies a particular I/O device in the system.
Logical device numbers are assigned to physical I/O devices.
logical disk volume. A hardware device or device pair that provides persistent, highly
accessible storage for data on a medium that is either magnetic or optical.
management process. A process through which an application issues commands to a
subsystem. A management process can be part of a subsystem or it can be associated
with more than one subsystem; in the latter case, the management process is logically
part of each subsystem. Subsystem Control Point (SCP) is the management process
for all NonStop subsystems controlled by Subsystem Control Facility (SCF).
nonconfigured object. An object that comes into existence after a Subsystem Control
Facility (SCF) subsystem is running and that was created in response to activity
outside the SCF environment. An SCF STATUS command can display the name of a
nonconfigured object, but its state is UNKNOWN.