ServerNet Cluster 6780 Operations Guide (G06.24+, H06.03+)

Glossary
ServerNet Cluster 6780 Operations Guide—525606-002
Glossary-11
Global Customer Support Center (GCSC)
Global Customer Support Center (GCSC). A support organization that provides telephone
and remote diagnostic support for HP customers. The GCSCs are located all over the
world.
globally unique ID (GUID). A unique, read-only number stored in nonvolatile memory
(SEEPROM) on a ServerNet II Switch at the time of manufacture. This number can be
used programmatically to identify the switch.
graphical user interface (GUI). A user interface that offers point-and-click access to
program functions.
group. The set of all objects accessible by a pair of service processors (SPs) located in the
processor multifunction (PMF) CRU. In a NonStop S-series server, there is one group
in a system enclosure.
GUI. See graphical user interface (GUI).
GUID. See globally unique ID (GUID).
guided procedure. A software tool that assists you in performing complex configuration or
replacement tasks on a NonStop S-series server. Guided procedures are accessible
from the Start menu on your system console. Examples include Replace SEB or
MSEB, Configure ServerNet Node, and Replace IOMF.
hard reset. An action performed on a cluster switch that reinitializes the router-2 ASIC
within the switch, disrupting the routing of ServerNet messages through the switch for
several minutes. When the hard reset is finished, the paths are restored automatically.
hop count. The number of routers that form a route between a ServerNet source and
ServerNet destination. Hop count is used to determine the best route. If two alternate
routes have the same time factor (TF), the path with the lower hop count is the better
route.
HP NonStop Cluster Switch (model 6770). The cluster switch
used with star, split-star,
and tri-star topologies. The 6770 switch consists of a ServerNet II Switch, an
uninterruptible power supply (UPS), and AC transfer switch, and it can be packaged in
a switch enclosure or in a 19-inch rack. See also HP NonStop ServerNet Switch
(model 6780).
HP NonStop ServerNet Switch (model 6780). The cluster switch used in the layered
topology. The 6780 switch consists of a switch logic board, a midplane, plug-in cards,
power supplies, and fans. See also HP NonStop Cluster Switch (model 6770).
IBC. See in-band control (IBC).
IEEE 802.3 protocol. Institute of Electrical and Electronics Engineers (IEEE) standard
defining the hardware layer and transport layer of (a variant of) Ethernet. The
maximum segment length is 500 meters and the maximum total length is 2.5