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

Glossary

300 HSG60 and HSG80 Array Controller and Array Controller Software Troubleshooting Guide

TMSCP

Tape mass storage control protocol. The protocol by which blocks of information are

transferred between the host and a CI controller on the CI Bus with tape devices.

topology

An interconnection scheme that allows multiple Fibre Channel ports to communicate with

each other. For example, point-to-point, Arbitrated Loop, and switched fabric are all Fibre

Channel topologies.

transfer data rate

The speed at which data may be exchanged with the central processor, expressed in

thousands of bytes per second.

Transparent Failover

A controller operational mode that allows the storage array remain available to the host by

allowing the surviving controller of a dual redundant pair to take over total control of the

subsystem and is transparent (invisible) to the host(s).

ULP

Upper Layer Protocol.

ULP process

A function executing within a Fibre Channel node which conforms to the ULP requirements

while interacting with other ULP processes.

ultra SCSI bus

A wide, fast-20 SCSI bus.

uninterruptible power supply

See UPS.

unit

A container made accessible to a host. A unit may be created from a single disk drive. A

unit may also be created from a more complex container such as a RAIDset. The controller

supports a maximum of eight units on each target.