Quantum Scalar i40 Guida Utente Scaricare il pdf (Pagina 316)

Glossary

290 Quantum Scalar i40 and Scalar i80 User’s Guide

physical media types supported by Fibre Channel, such as

optical fiber, twisted pair, and coaxial cable.

Firewall A set of security tools designed to separate an internal

network from the public Internet in order to keep unauthorized

users out of a restricted network. Firewalls are the primary line

of security defense for businesses.

FL_Port Fabric Loop Port. An F_Port that is capable of supporting an

attached Fibre Channel Arbitrated Loop. An FL_Port on a loop

will have the AL_PA hex’00’ giving the fabric the highest priority

access to the loop. N_Ports or NL_Ports can attach to it in an

Arbitrated Loop topology and are capable of communicating

with FC-AL protocol.

FRU (Field Replaceable Unit) The smallest hardware component that

can be replaced at a customer installation by a certified field

service representative.

G GUI (Graphical User Interface) A computer environment that

provides a visual view of a system by incorporating windows,

icons, menus, and a pointing device. Also referred to as a

Windows, Icons, Mouse, and Pointers (WIMP) interface.

H HDD (High Density Drive) A drive that contains increased storage

capacity of bits and/or tracks per square inch.

Home position Accessor axes positioned at 0 vertical and 0 horizontal,

that serve as the point of reference for the position of other

library components. Home position is used as a basis for

calibration.

Host In general, a host is a computer or program that contains data

and provides services to other computers or devices. In Fibre

Channel terms, a host is a computer that initiates contact with

storage devices.

Hot swappable The ability to replace a defective component while the

system continues to function normally.

HTTP (Hypertext Transfer Protocol) The communication rules by

which a Web browser (client) and a server delivering Web pages

exchange information.

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Quantum Scalar i40 Guida Utente Pagina 316