NonStop S-Series Hardware Installation and FastPath Guide (G06.26+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529876-001
Glossary-33
event message
an operator or an application select specific event-message data, and allows for
flexible distribution of event messages within a system or network.
event message. Text intended for a system operator that describes a change in some
condition in the system or network, whether minor or serious. The change of condition
is called an event. Events can be operational errors, notifications of limits exceeded,
requests for actions needed, and so on. See also operator message.
Event Viewer Server Manager. A persistent process that routes messages and data
between the OSM or TSM Event Viewer on the system console and event server and
summary server processes on the HP NonStop™ server. An event server process
retrieves events. A summary server is a persistent process that maintains a summary
of all the events in a specified log file.
exact point. See memory-exact point and register-exact point.
exception handler. A section of program code to which control is transferred when an
exception occurs. The exception handler then determines what action should be taken.
executable. See object code file.
Executable and Linkable Format (ELF). A common standard for executable files and
object code. On HP NonStop™ servers, ELF replaced the less extensible Common
Object File Format (COFF) for native files.
execution mode. The emulated or real instruction set environment in which object code
runs. A TNS system has only one execution mode: TNS mode using TNS compilers
and 16-bit TNS instructions. A TNS/R system has three execution modes: TNS/R
native mode using MIPS native compilers and MIPS instructions, emulated TNS
execution in TNS interpreted mode, and emulated TNS execution in TNS accelerated
mode.
Expand line-handler process. A process pair that handles incoming and outgoing Expand
messages and packets. An Expand line-handler process handles direct links and also
binds to other processes using the Network Access Method (NAM) interface to support
Expand-over-X.25, Expand-over-FOX, Expand-over-ServerNet, Expand-over-TCP/IP,
and Expand-over-SNA links. See also Expand-over-ServerNet line-handler process.
Expand network. The HP NonStop™ operating system network that extends the concept of
fault-tolerant operation to networks of geographically distributed HP NonStop™
systems. If the network is properly designed, communication paths are constantly
available even if a single line failure or component failure occurs.
Expand node. A system in an Expand network. See also node.
Expand node number. A number in the range 0 through 254, sometimes referred to as the
system number, that identifies a node in an Expand network. Each Expand node
number must be unique within the network. See also ServerNet node number.