Open SCSI Integrator's Manual for NonStop S-Series Servers

Glossary
Open SCSI Integrator’s Manual for NonStop Servers—422988-002
Glossary-22
ServerNet port
ServerNet port. A connector used for ServerNet links. Six ServerNet ports are located on a
ServerNet expansion board (SEB).
ServerNet router. An application-specific integrated circuit (ASIC) responsible for providing
interconnection of ServerNet links in a ServerNet system area network (ServerNet
SAN). A ServerNet router is never an end device. A ServerNet router in a Himalaya S-
series server has a total of six input and six output ServerNet ports.
ServerNet SAN. See ServerNet system area network (ServerNet SAN)
.
ServerNet system area network (ServerNet SAN). A wormhole-routed, full-duplex,
packet-switched, point-to-point network designed with special attention to reducing
latency and ensuring reliability. The ServerNet SAN provides the communication path
used for interprocessor messages and for communication between processors and I/O
devices.
ServerNet wide area network (SWAN) concentrator. A data communications peripheral
that provides connectivity to a 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.
service connection. A connection between the TSM client software running on a TSM
workstation and the TSM server software running on a NonStop S-series server. A
service connection can be used only to communicate with the server when the NonStop
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 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).
service processor (SP) event message. A type of notification. SP event messages are
generated by the master service processors (MSPs) on the Himalaya S-series server. The
TSM Notification Director Application can gather SP event messages directly from the
MSPs, allowing SP event messages to be received when the NonStop operating system
is not running. The System Down Message is a special type of SP event message.
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 NonStop S-series server. The TSM package
allows you to use the help of a service provider by configuring TSM to support remote
notification and remote access.
service side. The side of a system enclosure that contains, behind an optional door, processor
multifunction (PMF) customer-replaceable units (CRUs) or I/O multifunction (IOMF)
CRUs, ServerNet expansion boards (SEBs), and ServerNet adapters; it is opposite the