NonStop System Glossary

file system
In the Open System Services (OSS) environment, a collection of files and file attributes. A file system
provides the namespace for the file serial numbers that uniquely identify its files. Open System
Services provides a file system (see also ISO/IEC IS 9945-1:1990 [ANSI/IEEE Std. 1003.1-1990],
Clause 2.2.2.38); the Guardian application program interface (API) provides a file system; and
OSS Network File System (NFS) provides a file system. (OSS NFS filenames and pathnames are
governed by slightly different rules than OSS filenames and pathnames.) Within the OSS and OSS
NFS file systems, filesets exist as manageable objects.
On a NonStop system, the Guardian file system for an Expand node is a subset of the OSS virtual
file system. Traditionally, the API for file access in the Guardian environment is referred to as the
Guardian file system.
In some UNIX and NFS implementations, the term file system means the same thing as fileset. That
is, a file system is a logical grouping of files that, except for the root of the file system, can be
contained only by directories within the file system. See also fileset.
File Transfer, Access, and Management (FTAM)
The Open Systems Interconnection (OSI) standard developed by the International Organization
for Standardization (ISO) for network file exchange and management services.
file transfer protocol (FTP)
1. The Internet-standard, high-level protocol for transferring files from one machine to another.
The server side requires the client to supply a logon identifier and password before it honors
requests. FTP makes no assumptions about the file-naming structure of the source and destination
systems, and it allows the file names of each system to be represented in the vernacular.
2. The application used to send complete files over Transmission Control Protocol/Internet Protocol
(TCP/IP) services.
filename
In the Open System Services (OSS) environment, a component of a pathname containing any valid
characters other than slash (/) or null. See also file name.
fileset
In the Open System Services (OSS) environment, a set of files with a common mount point within
the file hierarchy. A fileset can be part or all of a single virtual file system.
On a NonStop system, the Guardian file system for an Expand node has a mount point and is a
subset of the OSS virtual file system. The entire Guardian file system therefore could be viewed as
a single fileset. However, each volume and each process of subtype 30 within the Guardian file
system is actually a separate fileset.
The term file system is often used interchangeably with fileset in UNIX publications.
filler panel
A blank faceplate that is installed in place of a computer component to ensure proper ventilation.
fingerprint
A unique identifier calculated for a file and displayed in hexadecimal format.
FIPS
A Federal Information Processing Standard of the United States government.
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