Chapter 3. Operating NetView FTP V2.2.1 MVS - IBM

session. In SNA, a logical connection between two
network-addressable units.
SFS. Shared file system.
SFS directory. A group of files. SFS directories can
be arranged to form a hierarchy in which one directory
can contain one or more subdirectories as well as files.
shared file pool. See file pool.
shared file system. A part of CMS that lets users
organize their files into groups known as directories,
and selectively share those files and directories with
other users.
single mode. A server running mode in which a server
stops running after it has transferred a file (or attempted
to transfer a file and failed).
slot. A space in the request queue directory that is
able to hold a request control element (RCE).
SMA. Server modification area.
SMF. System management facilities.
SMS. Storage Management Subsystem.
SNA. Systems Network Architecture.
SNA compaction. The transformation of data by
packing two characters in a byte that normally would
only hold one character.
SNA compression. The replacement of a string of up
to 64 repeated characters by an encoded control byte to
reduce the length of the string.
SNA network. In SNA, the part of a user-application
network that conforms to the formats and protocols of
Systems Network Architecture. It enables reliable
transfer of data among end users and provides protocols
for controlling the resources of various network
configurations. The SNA network consists of network
addressable units, boundary function components, and
the path control network.
SNA node. A node that supports SNA protocols.
socket. In the AIX operating system: (1) A unique
host identifier created by the concatenation of a port
identifier with a TCP/IP address. (2) A port identifier.
(3) A 16-bit port number. (4) A port on a specific host;
a communications end point that is accessible through a
protocol family’s addressing mechanism. A socket is
identified by a socket address. See also socket
address.
socket address. In the AIX operating system, a data
structure that uniquely identifies a specific communi-
cations end point. A socket address consists of a port
number and a network address. It also specifies the
protocol family.
SRMU. Statistics report message unit.
special file. In the AIX operating system, a file that
defines a FIFO (first-in, first-out) file or a physical
device.
SSCP. System Services Control Point.
statistics report message unit. A message unit sent
by the target (receiver of the file), at the end of the file
transfer.
status. The state of a request in the request queue
(MVS, VSE, or VM) or request database (OS/400). In
NetView FTP for MVS, VSE, or VM, the possible
statuses are waiting, active, and finished. In NetView
FTP/400, the possible statuses are held, waiting, active,
finished, and failed.
status data area. The area of ECSA into which
NetView FTP places details of the status of a server or
servers.
Storage Management Subsystem. An MVS subsystem
that helps automate and centralize the management
of DASD storage. SMS provides the storage
administrator with control over data class, storage class,
management class, storage group, and ACS routine
definitions.
submit (a request). To give (a request) to NetView
FTP so that NetView FTP can add it to the request
queue.
superuser. In the AIX operating system, the user who
has unrestricted authority to access and modify any part
of the operating system, usually the user who manages
the system.
supervisor call instruction. An instruction that interrupts
a running program and passes control to the
supervisor so that the supervisor can perform the
service indicated by the instruction.
SVA. Shared Virtual Area.
SVC. Supervisor call instruction.
symbolic constant. A data item that has an
unchanging, predefined value.
system authorization facility. At an MVS or VM
location, a generic interface to security products that is
provided by the operating system. In this way, an
installation has the possibility to run a security program,
such as IBM RACF.
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