Owner's manual

hard reset An action performed on an HP NonStop™ Cluster Switch (model 6770) and HP NonStop™
ServerNet Switch (model 6780) that reinitializes the router-2 ASIC within the switch, disrupting
the routing of ServerNet messages through the switch for several minutes.When the hard reset
is finished, the paths are restored automatically.
hardware error
freeze (HEF)
A lock-step error that has caused a processor to freeze.
HP NonStop
ServerNet Switch
(model 6780)
The cluster switch used in the layered topology. The 6780 switch consists of a switch logic
board, a midplane, plug-in cards, power supplies, and fans.
See also HP NonStop Cluster Switch (model 6770).
HP NonStop
Cluster Switch
(model 6770)
An assembly that routes ServerNet messages across an external fabric of a ServerNet cluster.
The cluster switch consists of a ServerNet II Switch, an uninterruptible power supply (UPS),
and AC transfer switch, and it can be packaged in a switch enclosure or in a 19-inch rack. The
cluster switch is used with star, split-star, and tri-star topologies. See also HP NonStop Cluster
Switch (model 6780).
I
I/O adapter
module enclosure
(IOAM enclosure)
The sheet-metal carrier that is installed in a standard 19-inch rack and contains the IOAM
components.
I/O adapter
module (IOAM)
A collection of modular components that provides I/O connectivity and can include ServerNet
switch boards, Fibre Channel ServerNet adapters (FCSAs), fans, and power supplies. In the
IOAM, each module is a logical entity that represents a single service domain.
I/O controller The hardware logic that controls computer I/O operations for a particular set of devices, such
as disks, tapes, terminals, or communications lines.
See also ServerNet addressable controller (SAC).
I/O enclosure An HP NonStop S-series system enclosure containing one module, which includes ServerNet
adapters, disk drives, components related to the ServerNet fabrics, and components related to
electrical power and cooling for the enclosure.
I/O multifunction
(IOMF) CRU
A customer-replaceable unit (CRU) that connects an I/O enclosure to a processor enclosure
through a ServerNet cable and supplies power to the components within the IOMF CRU as well
as redundantly to the disk drives, SCSI terminators, and ServerNet adapters in that enclosure.
The IOMF CRU contains a power supply, service processor, a ServerNet router, an Ethernet
controller, an external ServerNet port, and three SCSI ServerNet addressable controllers (
S-SACs) in a single unit.
I/O multifunction
(IOMF) 2 CRU
A customer-replaceable unit (CRU) that connects an I/O enclosure to a processor enclosure
through a ServerNet cable and supplies power to the components within the IOMF 2 CRU as
well as redundantly to the disk drives, SCSI terminators, and ServerNet adapters in that
enclosure.The IOMF2 CRU contains a power supply, service processor, a ServerNet router 2,
an Ethernet controller, three configurable ServerNet ports, and three SCSI ServerNet addressable
controllers (S-SACs) in a single unit.
incident report (IR) A report sent by the OSM software on the server to the OSM Notification Director on the OSM
system console. Incident reports notify you of changes that could directly affect the availability
of resources, changes in hardware configuration, and changes in software configuration.
If authorized, the OSM Notification Director forwards incident reports to your service provider.
The three types of incident reports are problem incident reports, software configuration reports,
and periodic incident reports.
indicator lights Two lights on a CRU or FRU that indicate the status of the unit as follows:
• The green indicator light is lit when the unit has proper power applied.
• The red or amber indicator light is lit when the unit is not working properly. During startup,
this light can indicate that the unit is not yet functioning.
See also light-emitting diode (LED).
284 Glossary