Tandem Failure Data System (TFDS) Manual

Glossary
HP Tandem Failure Data System (TFDS) Manual—540122-003
Glossary-12
TNS/E
TNS/E. Refers to fault-tolerant HP computers that support the HP NonStop™ operating
system and are based on the Intel® Itanium® processor. TNS/E systems run the
Itanium instruction set and can run TNS object files by interpretation or after
acceleration. TNS/E systems include all HP NonStop™ systems that use NSE-x
processors. Contrast with TNS/E and TNS/R.
TNS/R. Refers to fault-tolerant HP computers that support the HP NonStop™ operating
system and are based on 32-bit reduced instruction-set computing (RISC) technology.
TNS/R systems run the MIPS-1 RISC instruction set and can run TNS object files by
interpretation or after acceleration. TNS/R systems include all HP systems that use
NSR-x processors. Contrast with TNS/E and TNS/E.
triple-modular redundancy (TMR). See TMR.
triplex. see TMR.
unplanned outage. Time during which a computer system is not capable of doing useful
work because of an unplanned interruption. Unplanned interruptions can include
failures caused by faulty hardware, operator error, or disaster.
volume. A logical disk, which can be one or two magnetic disk drives. In HP NonStop™
S-series systems, volumes have names that begin with a dollar sign ($), such as
$DATA.
voting. Comparison of I/O output streams from one to three processing elements.
wild-card character. A character that stands for any possible character or characters in a
search string or in a name applying to multiple objects. In Subsystem Control Facility
(SCF) object-name templates, two wild-card characters can appear: ? (question mark)
for a single character and * (asterisk) for zero or more consecutive characters.
$ZPM. The name of the persistence manager process.
$ZZKRN. The name of the Kernel subsystem manager process.