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

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001
Glossary-106
standard 19-inch rack
standard 19-inch rack. A computer rack that accepts 19-inch components in 1-u
increments. Standard 19-inch racks can differ in depth, rails, and mounting
requirements. A standard19-inch rack, doors, PDR extention, and optional side panels
make up a modular cabinet.
standby power generator. A turbine-driven or engine-driven generator that provides a
backup source of power to designated loads. Often used to supplement an
uninterruptible power supply (UPS) in the event of extended utility outages.
star group. One set of X and Y HP NonStop™ Cluster Switches and the ServerNet nodes
(up to eight) that are connected to them. A star group can be thought of as a segment
of a split-star or tri-star topology. A split-star topology can contain up to two star
groups. A tri-star topology can contain up to three star groups.
start mode. An attribute of Subsystem Control Facility (SCF) PROCESS objects that
controls when and if an application process starts in G-series release version updates
(RVUs).
star topology. A network topology in which all nodes are connected to a central hub (HP
NonStop™ Cluster Switch). Each node has its own connection to the network, so a
break in the connection does not affect other nodes in the network. In a ServerNet
cluster, a star topology requires one cluster switch for each external fabric and can
support up to eight nodes. See also split-star topology, tri-star topology, and layered
topology.
startup file. A file invoked by the local operator or by another startup file that contains
commands to start up system devices, communications lines, and system and
application software. Contrast with shutdown file.
state. In Subsystem Control Facility (SCF), one of the generally defined possible conditions
of an object with respect to the management of that object. Examples of states are
DEFINED, STARTED, and STOPPED.
static information. Information that represents the set of customer-replaceable units
(CRUs) on an HP NonStop™ S-series system. Contrast with dynamic information
.
static server. In the Guardian environment, a process that runs continuously and provides a
specific service to other processes. A static server differs from a traditional UNIX
demon in that a demon actively looks for tasks to perform. A static server performs
only tasks brought to its attention by a client (requestor) process. See also demon
.
static translation. A TNS translation step explicitly invoked from the command line before a
TNS object file is executed. The Accelerator is a static translator.
STFs. See super time factors (STFs).
storage pool. A set of physical disk volumes administered as a set of logical disk volumes.
A logical disk volume can span multiple physical disk volumes. When a logical disk
volume becomes full, more physical disk volumes can be added.