Quantum Scalar i40, Руководство пользователя

Страница: 315 / 328

Glossary
Quantum Scalar i40 and Scalar i80 User’s Guide 289
Drivers Software programs that enable a computer to communicate
with hard drives, CD ROM drives, printers, and other
peripherals. Drivers are stored on a hard disk and loaded into
memory at boot up.
E
Element ID - Logical An address used by a library to locate and track
library component. The address is specified in programming
logic rather than on the physical location of a component
within a library. When a logical library is used, the logical
element ID masks the physical element ID.
Element ID - Physical An address used by a library to locate and track
library component. The address is based on the physical location
of a component within a library. Applications expect to see
resources at specific IDs.
Ethernet
A type of local area network designed to transport data at
rates up to 100 million bits per second. Other software, such as
TCP/IP runs on top of Ethernet to provide high-level networking
services to applications.
Event A condition that matches a numbered, predefined set of
circumstances.
Event log A list of all predefined events logged by library and software
management tools.
F
FC (Fibre Channel) A high speed data transfer architecture. Using
optical fibre to connect devices, Fibre Channel communications
are serial communications that occur at full duplex and achieve
data transfer rates of 200 MBps.
FC-AL (Fibre Channel Arbitrated Loop)
A form of Fibre Channel
network in which up to 126 nodes are connected in a loop
topology. See also
Arbitrated loop
.
FC-AL Device A device that employs Fibre Channel-Arbitrated Loop
and consists of one or more NL_Ports.
Fiber
A thin filament of glass. An optical waveguide consisting of a
core and a cladding which is capable of carrying information in
the form of light. Fiber is also a general term used to cover all