HP StorageWorks HSG80 ACS Solution Software V8.8 for IBM AIX Installation and Configuration Guide (AA-RV1HA-TE, March 2005)

Glossary

244 HSG80 ACS Solution Software V8.8 for IBM AIX Installation and Configuration Guide

interface A set of protocols used between components, such as cables,

connectors, and signal levels.

I/O Refers to input and output functions.

I/O driver The set of code in the kernel that handles the physical I/O to a device.

This is implemented as a fork process. Same as driver.

I/O interface See interface.

I/O module A 16-bit SBB shelf device that integrates the SBB shelf with either an

8-bit single ended, 16-bit single-ended, or 16-bit differential SCSI bus

(see SBB).

I/O operation The process of requesting a transfer of data from a peripheral device to

memory (or visa versa), the actual transfer of the data, and the

processing and overlaying activity to make both of those happen.

IPI Intelligent Peripheral Interface. An ANSI standard for controlling

peripheral devices by a host computer.

IPI-3 Disk Intelligent Peripheral Interface Level 3 for Disk

IPI-3 Tape Intelligent Peripheral Interface Level 3 for Tape

JBOD Just a bunch of disks. A term used to describe a group of single-device

logical units.

kernel The most privileged processor access mode.

LBN Logical Block Number.

L_port A node or fabric port capable of performing arbitrated loop functions

and protocols. NL_Ports and FL_Ports are loop-capable ports.

LED Light Emitting Diode.

link A connection between two Fibre Channel ports consisting of a transmit

fibre and a receive fibre.

local connection A connection to the subsystem using either its serial maintenance port

or the host SCSI bus. A local connection enables you to connect to one

subsystem controller within the physical range of the serial or host

SCSI cable.

local terminal A terminal plugged into the EIA-423 maintenance port located on the

front bezel of the controller. See also maintenance terminal.

logical bus A single-ended bus connected to a differential bus by a SCSI bus signal

converter.