Star topologies, Snetmon, Star – HP Integrity NonStop J-Series User Manual
Page 316: Split-star, Topologies, Service side, Service connection, Service provider, Star topology, Single-mode fiber-optic (smf) servernet cable

service connection
A connection between the system console and the OSM software on a NonStop server. A service
connection is initiated from the browser on the system console and can be used to communicate
with the server only when the NonStop operating system is running. The OSM Service Connection
provides a comprehensive service and maintenance picture of the server or ServerNet cluster and
is used to perform most service management tasks.
See also
service processor
(SP) event
messages
A
generated by the
master service processors (MSPs)
on the NonStop server. The
can gather SP event messages directly from the MSPs, allowing SP
event messages to be received when the NonStop operating system is not running.
service provider
A person trained and qualified to service
field-replaceable units (FRUs)
associated with a
NonStop server.
1.
2.
An organization, such as the Global Customer Support Center (GCSC), that helps you
resolve problems with your server or ServerNet cluster. OSM allows you to utilize the help
of a service provider by configuring OSM to support
and
.
service side
The side of a system enclosure that contains the CRUs. It is the side opposite the
. Cables are accessed from the service side.
simplex
A temporary state in which a Blade Complex or processor is running on only one Blade Eelement.
Also called single-modular redundancy (SMR).
single-mode
fiber-optic (SMF)
ServerNet cable
A fiber-optic cable that allows only one mode to propagate. SMF ServerNet cable has a
small-diameter core for optimized long-distance transmission.
See also
multimode fiber-optic (MMF) ServerNet cable
.
slot
A physical labeled space or sheet-metal frame in an
into which a
or other
system component can be installed. Slots have numbers that are unique in the enclosure.
small computer
system interface
(SCSI)
The communication protocol used between a controller pair and the hosts. Specifically, the
protocol is FC-AL or SCSI on Fibre Channel. SCSI is the higher command-level protocol and Fibre
Channel is the low-level transmission protocol.
snapshot
A record of the condition of your NonStop server, including
and
values of all
supported resources at the time the file was saved. Snapshots are created and
manually
using the OSM Service Connection.
SNETMON
Abbreviation for the ServerNet cluster monitor process. SETMON is a process pair named $ZZSCL
that manages the state of the ServerNet cluster subsystem. Each node (system) in a ServerNet
cluster must have one SNETMON process pair.
software
configuration
incident report
An
that notifies you of changes in the software configuration of your NonStop
server. Software configuration incident reports include the server’s software configuration file.
See also
,
source
One of two selection types for filtering OSM status messages. These category types are supported:
OSM encountered an SNMP protocol error.
SNMP
The OSM client or server application encountered an error while performing an OSM
operation.
SP Interface
The OSM operation failed due to a system error.
System
The user specified an incorrect value for the requested operation. Check the specified
value and retry the operation.
User
split-star topology
A network
that uses up to two HP NonStop Cluster Switches for each external fabric.
External routing is implemented between the two starred halves of a ServerNet cluster. (A starred
half consists of up to eight nodes attached to one set of cluster switches.) The starred segments
are joined by four-lane links. The split-star topology supports up to 16 nodes.
See also
,
.
star topology
A network
in which all nodes are connected to a central hub (HP NonStop Cluster
Switch). Each node has its own connection to the network, so a break in the connection does not
affect other nodes in the network. In a ServerNet cluster, a star topology requires one cluster
switch for each external fabric and can support up to eight nodes.
316
Glossary