HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Troubleshooting Guide (EK-G80TS-SA. C01, March 2005)

Glossary
297HSG60 and HSG80 Array Controller and Array Controller Software Troubleshooting Guide
SCSI device ID number
A bit-significant representation of the SCSI address referring to one of the signal lines,
numbered 0 through 7 for an 8-bit bus, or 0 through 15 for a 16-bit bus.
See also target ID number.
SCSI ID number
The representation of the SCSI address that refers to one of the signal lines numbered 0
through 15.
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.
SCSI-A cable
A 50-conductor (25 twisted-pair) cable generally used for single-ended, SCSI-bus
connections.
SCSI-P cable
A 68-conductor (34 twisted-pair) cable generally used for differential bus connections.
Selective Storage Presentation
Selective Storage presentation is a feature of the HSG80 controller that enables the user to
control the allocation of storage space and shared access to storage across multiple hosts.
This is also known as restricting host access.
serial transmission
A method of transmission in which each bit of information is sent sequentially on a single
channel rather than simultaneously as in parallel transmission.
service rate
The rate at which an entity is able to service requests. For example, the rate at which an
Arbitrated Loop is able to service arbitrated requests.
signal converter
See SCSI bus signal converter.
SIMM
Single inline memory module.
single ended I/O module
A 16-bit I/O module.
See also I/O module.
single-ended