Compaq DWZZH manual Glossary, Controller

Glossary

This Glossary includes an alphabetized listing and brief definition of the abbreviations, acronyms, Compaq-specific references, and other technical terms that are used in this manual and that may be unfamiliar to the reader.

adapter

See SCSI bus converter.

building block shelf

See SBB shelf.

controller

A hardware/firmware device that manages communications on behalf of host systems over the SCSI bus to devices, such as the HSC-series, HSJ-series, and HSZ-series controllers. Controllers typically differ by the type of interface to the host and provide functions beyond what the devices support.

differential SCSI bus

A signal's level is determined by the potential difference between two wires. A differential bus is more robust and less subject to electrical noise than is a single-ended bus.

DWZZC

AStorageWorks compatible 16-bit UltraSCSI bus converter. See SCSI bus converter.

DWZZH

A StorageWorks compatible 16-bit UltraSCSI bus HUB.

electrostatic discharge

See ESD.

ESD

Electrostatic discharge is the discharge of a potentially harmful static electric voltage as a result of improper grounding.

host

The primary or controlling computer or any such unit (in a multiple computer network) to which storage is attached.

EK–DWZZH–UG. D01 Glossary–1