preferred format when capacity (rather than fast access) is the key storage consideration. An
Ultrium cartridge has a compressed data capacity of up to 30000 GB (2.5:1 compression) and a
native data capacity of up to 12000 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 Linear Tape-Out.
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
M8 LTO 8 Type M Cartridge.
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 IBM 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.
meter In the Metric System, the basic unit of length; equal to approximately 39.37 inches.
MIB Management Information Base. Information repository that is used by SNMP.
micro One millionth of.
microcode
(1) One or more micro instructions. (2) A code, representing the instructions of an instruction set,
Glossary 343
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