Tandem Failure Data System (TFDS) Manual

Glossary
HP Tandem Failure Data System (TFDS) Manual—540122-003
Glossary-6
Kernel subsystem
Kernel subsystem. In G-series and H-series release version updates (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 release version updates (RVUs). The $ZZKRN Kernel subsystem manager
process is started and managed by the Persistence Manager ($ZPM).
load. (1) To transfer the HP NonStop™ operating system image or a program from disk into
a computer’s memory so that the operating system or program can run. (2) To insert a
tape into a tape drive, which prepares it for a tape operation (read or write).
local operator. The person who performs routine system operations, such as starting and
stopping the system, loading and unloading tapes, and changing the air filter. The local
operator is normally the operator of the asynchronous system console for the node.
See also operator.
local system. (1) An on-site system or a system that is geographically near the user or
operator. (2) From the perspective of a particular SNETMON, the system or node on
which that SNETMON is running. (3) From the perspective of a system console
operator, the system to which the operator is logged on. Contrast with remote system.
main memory. Data storage, specifically the chips that store the programs and data
currently in use by a processor.
microcode. Any machine code or data that can run in a microprocessor. HP produces two
types of microcode for HP NonStop™ systems: volatile and nonvolatile. Volatile
microcode is loaded into the volatile random-access memory (RAM) of some types of
printed wiring assemblies (PWAs) and is not retained in a host PWA when power to the
PWA is interrupted. For nonvolatile microcode, see firmware. See also millicode.
millicode. The system’s lowest-level machine-dependent code, often coded in assembler
language. TNS/E millicode and TNS/R millicode are functionally similar to the
microcode on TNS systems. The system has several types of millicode, including
machine interrupt handlers, operating system primitives, routines implicitly called from
native-compiled code, emulators for TNS floating-point arithmetic, and emulators for
privileged-only or long-running TNS machine operations.
nonessential firmware. Code that is used for support routines such as self-test diagnostics
and that can be overwritten during flash programming without affecting the next
power-up operation. Contrast with essential firmware.
NonStop™ Blade Complex (NSBC). See HP NonStop™ Blade Complex (NSBC).
NonStop™ Blade Element (NSBE). See HP NonStop™ Blade Element (NSBE).
NonStop™ Kernel operating system. See HP NonStop™ operating system.