QIO Configuration and Management Manual

Glossary
QIO Configuration and Management Manual—424717-008
Glossary-10
PROFILE object type
PROFILE object type. The Subsystem Control Facility (SCF) object type for the storage
subsystem configuration profile.
protocol. A set of rules used by processes or devices for exchanging data.
QIO. An HP NonStop™ product that provides buffers and control blocks for client
processes, (including TCP/IP, TLAM, NonStop IPX/SPX, and other processes) running
on the same processor.
QIO library. The QIO library is a set of procedures for QIO functions used by client
processes, the QIO monitor process, and the LAN driver and interrupt handler.
QIO monitor. The QIO monitor process is responsible for creating the shared memory
segment, allocating the segment to client processes, monitoring the client processes
that are using the segment, and performing functions needed to manage the segment.
queue. A queue holds a list of message descriptors for a client process.
request packet. A ServerNet packet sent from one ServerNet device to another, requesting
either a read action or a write action on the part of the receiving device. In the case of
a write request, the packet contains the data to be written. The receiving device is
expected to take the appropriate action and return a response packet to the device that
sent the request packet. See also response packet, ServerNet packet,and ServerNet
transaction.
response packet. A ServerNet packet returned from one ServerNet device to another,
responding to an earlier received read request or write request. In the case of
responding to a read request, the response packet contains the data that the
requesting device wanted to have read. See also request packet, ServerNet packet,
and ServerNet transaction.
SCF. See Subsystem Control Facility (SCF)
.
SCP. See Subsystem Control Point (SCP).
segment. In general, a contiguous sequence of logically related pages of virtual memory.
The pages of the segment are individually swapped in and out of physical memory as
needed. Within a loadable object file, one of the portions of the file that is mapped as
one unit into virtual memory as the file is loaded.
sensitive command. A Subsystem Control Facility (SCF) command that can be issued only
by a user with super-group access, by the owner of the subsystem, or by a member of
the group of the owner of the subsystem. The owner of a subsystem is the user who
started that subsystem (or any user whose application ID is the same as the server
ID—the result of a PROGID option that requires super-group access). See also
nonsensitive command
.
server. (1) An implementation of a system used as a stand-alone system or as a node in an
Expand network. (2) A combination of hardware and software designed to provide