NonStop S-Series Server Description Manual (G06.24+)

Glossary
HP NonStop S-Series Server Description Manual—520331-003
Glossary-32
export
export. To offer a symbol definition for use by other loadfiles. A loadfile exports a symbol
definition for use by other loadfiles that need a data item or function having that
symbolic name.
export digest. A mathematical hash of the exported symbol names and locations in a
library. Two libraries with the same export digest are interchangeable in that they both
export the same symbols at the same locations; they are not necessarily semantically
equivalent.
extended data segment. See selectable segment.
extended link format (ELF). A standard binary file format common on UNIX systems. The
ELF format is used for position-independent code (PIC) files.
extensible input/output (XIO). A redesign of the HP NonStop™ Kernel operating system’s
I/O subsystem to enable it to extend itself in general ways to meet future requirements.
extent. A contiguous area on disk for allocating one file.
extent size. The size in bytes of a contiguous area on disk for allocating one file.
external entry point (XEP) table. A table located in the last page of each TNS code
segment that contains links for calls (unresolved external references) out of that
segment.
external fabric connection. The low-level ServerNet connection between a node and one
of the external ServerNet fabrics. Each node has an X and a Y connection to the
external fabrics.
external routing. The routing of packets over the external ServerNet fabrics—that is,
between systems (or nodes) in a ServerNet cluster. See also internal routing.
external ServerNet fabrics. The fabrics that link systems in a ServerNet cluster. See also
internal ServerNet fabrics.
external ServerNet X or Y fabric. The X or Y fabric that links systems in a ServerNet
cluster. See also internal ServerNet X or Y fabric.
external system area network manager process (SANMAN). (1) A Guardian process
with the name $ZZSMN that provides management access to the external ServerNet X
and Y fabrics. (2) A Windows NT process that configures and maintains ServerNet
switches within a Windows NT cluster.
fabric. A complex set of interconnections through which there can be multiple and (to the
user) unknown paths from point to point. The term “fabric” is used to refer to the X or Y
portion of the ServerNet communications network; for example, the X fabric.
factory-installed operating system. The version of the operating system image that HP
creates having a CONFTEXT configuration file, OSIMAGE file, and configuration