Quantum 1200 Series DAT Autochanger Instrukcja Użytkownika Pobierz pdf (Strona 137)

Glossary

SDLT 600 Product Manual 121

LVD

Low Voltage Differential signalling is an electrical signalling system

that can run at high speeds over cheap, twisted-pair copper cables.

µM A Micrometer is an SI unit of length. It is defined as one millionth of

a metre (1 × 10

-6

m), equivalent to one thousandth of a millimeter.

MAM Medium Auxiliary Memory (MAM) is an SDLT 600 tape drive

feature that provides information on the status and prior use history of an

DLTtape cartridge.

MB Megabyte

SI — 1 000 000 bytes or 10

bytes. This is the International System of Units

(SI) definition used by telecommunications engineers and storage

manufacturers.

1 048 576 bytes - 1024

, or 2

. This definition is often used in computer

science and computer programming, when talking about the size of files

or computer memory. The reason is that computers use the binary

numeral system internally.

Note: For the purpose of this document we are using SI.

MRC Heads Magneto Resistive Cluster Heads. A cluster of small, cost-

effective Magneto Resistive (MR) media heads packed densely together.

ms A Millisecond is equal to one thousandth of a second.

MTBF Mean Time Between Failures.

Native Capacity The capacity of a given media product in its basic

recording format (without the use of data compression).

Native Mode Refers to the uncompressed storage capacity of a media

subsystem. (See Native Capacity.)

Node In referring to a Fibre Channel network, a node is any device

attached to the network.

Parity A method of generating redundant information that can be used

to detect errors in stored or transmitted data.

Peripheral A device added to a system as a complement to the basic

central processing unit (CPU), such as a disk drive, tape drive, or printer.

Port In referring to a Fibre Channel network, a port connects a node to

the network.

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Quantum 1200 Series DAT Autochanger Instrukcja Użytkownika Strona 137