NonStop S-Series Hardware Installation and FastPath Guide (G06.25+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001
Glossary-119
TNS/R native process
TNS/R native process. A process initiated by executing a TNS/R native object file. Contrast
with TNS process.
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.
TNS/R native signal. A signal model available to TNS/R native processes in both the
Guardian and Open System Services (OSS) environments. TNS/R native signals are
used for error exception handling.
TNS/R native user library. A user library available to TNS/R native processes in both the
Guardian and Open System Services (OSS) environments. A TNS/R native user library
is implemented as a special private TNS/R native shared run-time library (TNS/R
native SRL).
token. A character sequence processed as a unit by a command process.
Token-Ring ServerNet adapter (TRSA). A ServerNet adapter that provides a single line
from an HP NonStop™ 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.
Total Information Manager (TIM). See HP NonStop™ Technical Library (NTL).
transformer. Equipment used to step up or step down alternating-current (AC) voltage to
meet the specific requirements of the load. A transformer also provides isolation and
noise-attenuation properties.
transient. A short-duration, high-amplitude impulse that is imposed on the normal voltage or
current.
translation lookaside buffer (TLB). A special-purpose cache, part of the RISC processor
chip, that is used in quickly translating virtual addresses to physical addresses. This
rapid translation is accomplished by remembering and reusing the translations of
recently referenced pages.