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

Glossary

HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001

Glossary-115

tetrahedron

tetrahedron. A geometric solid with four vertices. The edges of the tetrahedron represent

connections between the vertices in which each vertex connects to all other vertices.

For ServerNet, a tetrahedron is four processors interconnected by ServerNet links so

as to form a conceptual tetrahedron. Each processor therefore has a direct connection

to the other three processors. See tetrahedral topology.

text string. A variable-length sequence of ASCII characters, defined in the CONFTEXT file,

that an identifier represents. When Distributed Systems Management/Software

Configuration Manager (DSM/SCM) encounters an identifier, it substitutes the

associated text string for the identifier.

TF. See time factor (TF).

TFDS. See HP Tandem Failure Data System (TFDS).

TFTP. See Trivial File Transfer Protocol (TFTP).

THD. See total harmonic distortion (THD).

three point fall of potential measurement method. The measurement of a grounding

electrode (such as a ground rod) where ground resistance is measured with respect to

two other points. The ratio of the measurements determines the resistance of the

grounding electrode.

TIM. See HP NonStop™ Technical Library (NTL).

time factor (TF). A number assigned to a line, path, or route to indicate its efficiency in

transporting data. The lower the time factor, the more efficient the line, path, or route.