6760 ServerNet/DA Manual

Glossary
6760 ServerNet/DA Manual—424879-003
Glossary-30
expansion service processor (ESP)
an Expand-over-ServerNet line-handler process for each 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)
.
extended data segment. An area of virtual memory used to contain data.
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 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
database that matches your order. Your system is shipped with this version installed in
the system subvolume $SYSTEM.SYS00.
fan. A component within an HP NonStop™ S-series system enclosure that circulates air
into the enclosure to help maintain optimal temperature. Each NonStop S-series
system enclosure contains two fans.
Fast Ethernet ServerNet adapter (FESA). A single-ported ServerNet adapter that supports
100-megabit/second (Mbps) and 10-Mbps Ethernet data transfer rates on an HP