TCP/IP (Parallel Library) Migration Guide

Glossary
HP NonStop TCP/IP (Parallel Library) Migration Guide—522272-003
Glossary-7
nowait mode
nowait mode. In Guardian file-system operations and in some APS operations, the mode in
which the called procedure initiates an I/O operation but does not wait for it to complete
before returning control to the caller. To make the called procedure wait for the
completion of the operation, the application calls a separate procedure.
object. (1) In general HP use, one or more of the devices, lines, processes, and files in an
HP subsystem; any entity subject to independent reference or control by one or more
subsystems. (2) In DSM use, an entity subject to independent reference and control by
a subsystem: for example, the disk volume $DATA or the data communications line
$X2502. An object typically has a name and a type known to the controlling
subsystem.
object type. In DSM, the category of objects to which a specific object belongs: for
example, a specific disk file might have the object type FILE, and a specific terminal
might have the object type SU (subdevice). A subsystem identifies a set of object types
by the objects it manages. The SCF interfaces to HP data communications
subsystems use standard keywords to identify the types. The corresponding
programmatic interfaces have object-type numbers (represented by symbolic names
such as ZCOM-OBJ-SU) appropriate for passing to the SPI SSINIT procedure.
object-name template. In DSM, a name that stands for more than one object. Such a name
includes one or more wild-card characters, such as * and ?. See also wild-card
character.
Open System Services (OSS). Open System Services (OSS) is an alternative to the
traditional Guardian interface through which users and programs can interact with the
the NonStop operating system. The main purpose of Open System Services is to
provide an open interface to the operating system for supporting portable applications.
OSS. See Open System Services (OSS).
packet. The unit of data sent across a packet switching network. While some Internet
literature uses it to refer specifically to data sent across a physical network, other
literature views the Internet as a packet switching network and describes IP datagrams
as packets.
Parallel Library TCP/IP. An HP product that provides increased performance and scalability
over conventional Transmission Control Protocol/Internet Protocol (TCP/IP). Parallel
Library TCP/IP coexists with conventional TCP/IP on NonStop S-series systems and
supports Ethernet 4 ServerNet adapters (E4SAs), Fast Ethernet ServerNet adapters
(FESAs), Gigabit Ethernet ServerNet adapters (GESAs), and ServerNet wide area
network (SWAN) concentrators.
PARAM. An HP Tandem Advanced Command Language (TACL) command and a
Subsystem Control Facility (SCF) command you can use to create a parameter and
give it a value. The TACL process stores the values of parameters assigned by the
PARAM command and sends the values to applications that request parameter values.