Fast Ethernet Adapter Installation and Support Guide

Glossary
Fast Ethernet Adapter Installation and Support Guide—425685-003
Glossary-105
TNS system library
only one TNS SRL. A TNS SRL is implemented as a special user library that allows
shared global data.
TNS system library. A collection of HP-supplied TNS-compiled routines available to all
TNS processes. There is no per-program or per-process customization of this library.
All routines are immediately available to a new process; no dynamic loading of code or
creation of instance data segments is involved. See also native system library.
TNS/R. HP computers that support the HP NonStop™ Kernel operating system and that are
based on reduced instruction-set computing (RISC) technology. TNS/R processors
implement the RISC instruction set and are upwardly compatible with the TNS
system-level architecture. Systems with these processors include most of the HP
NonStop™ servers. Contrast with TNS.
TNS/R library. A TNS/R native-mode library. For a PIC-compiled application, TNS/R
libraries can be dynamic-link libraries (DLLs) or hybridized native shared runtime
libraries (SRLs). For a non PIC-compiled application, TNS/R libraries can only be
native SRLs.
TNS/R native mode. The operational environment in which native-compiled RISC
instructions execute. See also accelerated mode and TNS mode.
TNS/R native process. A process initiated by executing code that has been compiled
directly to RISC instructions, rather than to TNS instructions. Such a process uses
RISC register and stack conventions and executes in TNS/R native mode.
TNS/R native shared run-time library (TNS/R native SRL). A shared run-time library
(SRL) available to TNS/R native processes in both the Guardian and Open System
Services (OSS) environments. TNS/R native SRLs can be either public or private. A
TNS/R native process can have multiple public SRLs but only one private SRL.
Token-Ring ServerNet adapter (TRSA). A ServerNet adapter that provides a single line
from an HP NonStop™ S-series server to a token-ring network, allowing the server to
act as a station on the ring. The 3862 TRSA can be configured to support network
speeds of 4 megabits/second (Mbps) or 16 Mbps, and the media can be either
shielded twisted pair (STP) or unshielded twisted pair (UTP).
topology. The physical layout of components that define a local area network (LAN), wide
area network (WAN), or ServerNet fabric. See also star topology and tetrahedral
topology.
topology branch. A processor enclosure and the I/O enclosures attached to it.
total harmonic distortion (THD). The ratio, expressed in percent, of the root mean square
(rms) value for all harmonics present in the output of a power source to the total rms
voltage at the output, for a pure sine-wave output. The lower the THD, the better the
power source.