NonStop S-Series Planning and Configuration Guide (G06.25+)

Glossary
HP NonStop S-Series Planning and Configuration Guide—523303-015
Glossary-95
ServerNet II Switch
ServerNet II Switch. A 12-port network switch that provides the physical junction point to
enable an HP NonStop™ S-series server to connect to a ServerNet cluster. The
ServerNet II Switch is a component of the HP NonStop™ Cluster Switch (model 6770)
.
ServerNet switch board. Component in an IOAM. The ServerNet switch board provides
ServerNet connections to the I/O adapters in the IOAM. It also provides maintenance
functions for the modules in which they are installed.
ServerNet transaction. The bidirectional, successful transmission of a pair of ServerNet
packets between two ServerNet devices. The device that originates the transaction
sends a request packet, and the device that receives the request returns a response
packet. See also request packet
and response packet.
ServerNet wide area network (SWAN) concentrator. (1) An HP data communications
peripheral that provides connectivity to an HP NonStop™ S-series server. The SWAN
concentrator supports both synchronous and asynchronous data over RS-232,
RS-449, X.21, and V.35 electrical and physical interfaces. (2) A collective term for both
SWAN concentrators and SWAN 2 concentrators when a distinction between the two is
not required.
ServerNet wide area network (SWAN) 2 concentrator. An HP data communications
peripheral that provides connectivity to an HP NonStop™ S-series server. The SWAN
2 concentrator supports both synchronous and asynchronous data over RS-232,
RS-449, X.21, and V.35 electrical and physical interfaces. The SWAN 2 concentrator is
the next-generation SWAN concentrator and has 12 WAN ports.
service connection. A connection between the Compaq TSM client software running on a
system console and the TSM server software running on an HP NonStop™ S-series
server. A service connection can be used to communicate with the server only when
the HP NonStop™ Kernel operating system is running. A service connection provides
a comprehensive service and maintenance picture of the server and is used to perform
most service management tasks. See also low-level link
.
service equipment. The necessary equipment, usually consisting of circuit breakers and
their accessories, that is located near the entrance point of supply conductors. This
equipment constitutes the main control and cutoff means of the supply.
service processor (SP). A physical component of the processor multifunction (PMF)
customer-replaceable unit (CRU) or I/O multifunction (IOMF) CRU that controls
environmental and maintenance functions (including system load functions) in the
enclosure. SPs operate in pairs to provide fault tolerance. The two SPs in group 01 are
designated the master service processors (MSPs). Other pairs of SPs within a system
are called expansion service processors (ESPs). See also expansion service
processor (ESP) and master service processor (MSP).
service provider. (1) A person trained and qualified to service field-replaceable units
(FRUs). (2) An organization, such as the Global Customer Support Center (GCSC),
that helps you resolve problems with your HP NonStop™ S-series server. OSM and