HP NonStop G-Series - Manual (Page 250)

board
A frame on which computer circuitry is mounted. Same as logic board .
boot
A synonym for load .
bus
A system or subsystem data path that provides serial or parallel interconnection for
multiple modules or components. Examples of buses are the serial maintenance buses
(SMBs) and the small computer system interface (SCSI) buses.
C
client
A software process, hardware device, or combination of the two that requests services
from a server. Often, the client is a process that resides on a programmable
system
console and is the part of an application that provides the user interface. The system
console client might also perform other portions of the application logic.
cluster
A collection of servers or nodes that can function either independently or collectively as a
processing unit. See also
ServerNet cluster .
cluster number
A number that uniquely identifies a cluster . For example, this number can range from 1
through 14 for nodes in a Fiber Optic Extension (FOX) ring.
cluster switch
See HP NonStop Cluster Switch (model 6770) and HP NonStop ServerNet Switch
(model 6780) .
cluster switch enclosure
An enclosure provided by HP for housing the subcomponents of an HP NonStop Cluster
Switch. The subcomponents include the ServerNet II Switch, the AC transfer switch, and
the uninterruptible power supply (UPS). A cluster switch enclosure resembles, but is half
the height of, a standard NonStop S-series system enclosure.
cluster switch group
Within an external ServerNet fabric, all the cluster switches that belong to the same
cluster switch zone . A cluster switch group can consist of up to four 6780 switches, each
representing one cluster switch layer . All of the cluster switches that form a cluster
switch group typically are installed in the same cluster switch rack.
cluster switch layer