NonStop System Glossary

super ID
On NonStop systems, a privileged user who can read, write, execute, and purge all files on the
system. The super ID is usually a member of a system-supervisor group.
The super ID has the set of special permissions called appropriate privileges. In the Guardian
environment, the structured view of the super ID, which is (255, 255), is most commonly used. In
the Open System Services (OSS) environment, the scalar view of the super ID, which is 65535, is
most commonly used.
super time factors (STFs)
An enhancement to the Expand product that allows the extension of automatically calculated time
factors to line speeds greater than 224 kilobits/second. These time factors are logarithmic based
and allow specification of a much broader range of line performance.
superblock
The part of the Open System Services (OSS) environment that contains all the information about
the current state of the OSS file system. The superblock contains such items as the free list and the
size of inodes.
super-group user
A user who can read, write, execute, and purge most files on the system. Super-group users have
user IDs that have 255 as the group number.
superuser
See super ID.
supplementary group ID
An Open System Services (OSS) process attribute that is used to determine the file-access permissions
for the process.
support planner
The person who creates the operational environment for the system and is responsible for the
support of the system. This person creates the startup and shutdown files, performs replacement
operations, and prepares the system for upgrades and additions.
surge
An increase in the amplitude of source voltage of short duration.
SUT
See site update tape (SUT).
SVID
The System V Interface Definition for UNIX, published by AT&T.
SVR4
System V Release 4, a specific implementation of UNIX. See also System V.
SWAN concentrator
See ServerNet wide area network (SWAN) concentrator.
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