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GL–15
Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide
SCSI ID number The representation of the SCSI address that refers to one of the signal lines
numbered 0 through 15.
SCSI-P cable A 68-conductor (34 twisted-pair) cable generally used for differential bus
connections.
SCSI port (1) Software: The channel controlling communications to and from a
specific SCSI bus in the system. (2) Hardware: The name of the logical
socket at the back of the system unit to which a SCSI device is connected.
serial data
transmission
A method transmission in which each bit of information is sent sequentially
on a single channel rather than simultaneously as in parallel transmission.
signal converter See SCSI bus signal converter.
single ended I/O
module
A 16-bit I/O module. See also I/O module.
single-ended SCSI
bus
An electrical connection where one wire carries the signal and another wire
or shield is connected to electrical ground. Each signal’s logic level is
determined by the voltage of a single wire in relation to ground. This is in
contrast to a differential connection where the second wire carries an
inverted signal.
spareset A collection of disk drives made ready by the controller to replace failed
members of a storageset.
storage array An integrated set of storage devices.
storage array
subsystem
See storage subsystem.
storageset (1) A group of devices configured with RAID techniques to operate as a
single container. (2) Any collection of containers, such as stripesets,
mirrorsets, striped mirrorsets, and RAIDsets.