NonStop S-Series Hardware Installation and FastPath Guide (G06.26+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529876-001
Glossary-34
Expand-over-ServerNet line
Expand-over-ServerNet line. The single line associated with an Expand-over-ServerNet
line-handler process. An Expand-over-ServerNet line has the same name and logical
device number as its Expand-over-ServerNet line-handler process. However, the line
does not have the same states as the line-handler process.
Expand-over-ServerNet line-handler process. An Expand line-handler process that uses
the NETNAM protocol to access the Network Access Method (NAM) interface provided
by the ServerNet cluster monitor process, $ZZSCL. The Expand-over-ServerNet line-
handler process handles incoming and outgoing Expand messages. It also handles
packets leaving the server and security-related messages going between systems
within a ServerNet cluster. Each node in a ServerNet cluster must be configured with
an Expand-over-ServerNet line-handler process for every other node in the ServerNet
cluster.
expansion service processor (ESP). A service processor (SP) that is not a master service
processor (MSP). ESPs occur in pairs in groups 02 through nn (not in group 01). See
also master service processor (MSP).
explicit DLL. See explicit dynamic-link library (explicit DLL).
explicit dynamic-link library (explicit DLL). A dynamic-link library (DLL) that is named in
the libList of a client or is a native-compiled loadfile associated with a client.
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
.
extensible input/output (XIO). A redesign of the HP NonStop™ 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.