NonStop S-Series Planning and Configuration Guide (G06.26+)
Glossary
HP NonStop S-Series Planning and Configuration Guide—523303-017
Glossary-53
instruction processing unit (IPU)
instruction processing unit (IPU). A processing unit that executes programs by fetching 
instructions from memory and executing them.
insulated ground. A grounding conductor with a dielectric (low-conductance) insulator 
around it to prevent inadvertent contact with metal conduits.
intelligent SCSI processor (ISP). The ServerNet addressable controller (SAC) that 
controls the small computer system interface (SCSI) bus.
interactive mode. A mode of operation that is characterized by having the same input and 
output device (a terminal or a process) for the session. If a terminal is used, a person 
enters a command and presses Return. If a process is used, the system interface waits 
for the process to send a request and treats the process in the same manner as a 
terminal. Contrast with noninteractive mode
.
internal routing. The routing of packets within an HP NonStop™ server. See also external 
routing.
internal ServerNet fabrics. The fabrics that link ServerNet devices within an HP 
NonStop™ server. See also external ServerNet fabrics
.
internal ServerNet X or Y fabric. The X or Y fabric that links ServerNet devices within an 
HP NonStop™ server. See also fabric
.
internationalization. The process of designing and coding software so that it can be 
adapted to meet the needs of different languages, cultures, and character sets, with 
the ability to handle various linguistic and cultural conventions. Internationalization 
methods enable the processing of character-based data independently of the 
underlying character encoding, allowing choice among character sets. Sometimes 
referred to as 
I18N, derived from the 18 letters between the initial I and the final N of 
the word 
internationalization. See also character set.
Internet address. The 32-bit address assigned to hosts that want to participate in the 
Internet using Transmission Control Protocol/Internet Protocol (TCP/IP). Internet 
addresses are an abstraction of physical hardware addresses, just as the Internet is an 
abstraction of physical networks. As assigned to the interconnection of a host to a 
physical network, an Internet address consists of a network portion and a host portion. 
See also IP address
.
Internet control message protocol (ICMP). A maintenance protocol in the Transmission 
Control Protocol/Internet Protocol (TCP/IP) suite that is required in every TCP/IP 
implementation. The ICMP allows two nodes on an IP network to share IP status and 
error information. The ICMP is used by the ping utility to determine the readability of a 
remote system. See also IP address
 and ping.
Internet protocol (IP). A data communications protocol that handles the routing of data 
through a network, which typically consists of many different subnetworks. IP is 
connectionless. It routes data from a source address to a destination address. See 
also IP address
.










