Dell PowerVault TL4000 User Manual

Page 291

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product and media. The “open” nature of LTO technology enables
compatibility between different vendors' offerings by ensuring that vendors
comply with verification standards. The LTO technology is implemented in
two formats: the Accelis format focuses on fast access; the Ultrium format
focuses on high capacity. The Ultrium format is the preferred format when
capacity (rather than fast access) is the key storage consideration. An
Ultrium cartridge has a compressed data capacity of up to 6250 GB (2.5:1
compression) and a native data capacity of up to 2500 GB.

liquid crystal display (LCD)

A low-power display technology that is used in computers and other I/O
devices.

loadable

The ability to be loaded.

LME

Library Managed Encryption.

LTO cartridge memory (LTO-CM)

Within each LTO Ultrium data cartridge, an embedded electronics and
interface module that can store and retrieve a cartridge's historical usage
and other information.

LUN

Logical Unit Number.

LVD

SCSI Bus Low Voltage Differential

M

MAC address

The Media Access Control address of a computer networking device.

magnetic tape

A tape with a magnetic surface layer on which data can be stored by
magnetic recording.

MAP

Maintenance analysis procedure.

mask

A pattern of characters that controls the retention or elimination of portions
of another pattern of characters. To use a pattern of characters to control
the retention or elimination of portions of another pattern of characters.

master file

A file that is used as an authority in a job and that is relatively permanent,
even though its contents might change. Synonymous with main file.

Maximum Transmission Unit (MTU)

The size of the largest packet that a network protocol can transmit.

MB

Megabyte (expressed as data rate in MB/s or MB/second).

media capacity

The amount of data that can be contained on a storage medium, expressed
in bytes of data.

media-type identifier

Pertaining to the bar code on the bar code label of the Ultrium tape
cartridge, a 2-character code, L1, that represents information about the
cartridge. L identifies the cartridge as one that can be read by devices that
incorporate LTO technology; 1 indicates that it is the first generation of its
type.

mega

One million of.

Glossary

I-11

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