HP NonStop G-Series User Manual

Page 251

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in one processor has no effect on any other processor.

A variable speed airflow device that pulls air into an enclosure or element. It usually pulls
air in from the front and exhausts the heated air out the rear.

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

cabinet

The rack, front and back doors, side panels (if any), and PDUs. Cabinets contain
enclosures and other system components. A cabinet that can contain multiple enclosures
is also called a

modular cabinet

.

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

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