Dell PowerVault TL2000 User Manual page 273

liquid crystal display (LCD). A low-power display
technology used in computers and other I/O devices.
loadable. Having the ability to be loaded.
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.
LVD. SCSI Bus Low Voltage Differential
M
magnetic tape. A tape with a magnetical 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 used as an authority in a given job
and that is relatively permanent, even though its
contents may change. Synonymous with main file.
MB. Mega Byte (usually 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 which 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.
micro. One millionth of.
microcode. (1) One or more micro instructions. (2) A
code, representing the instructions of an instruction set,
implemented in a part of storage that is not
program-addressable. (3) To design, write, and test one
or more micro instructions. (4) See also microprogram.
microdiagnostic routine. A program that runs under
the control of a supervisor, usually to identify field
replaceable units.
microdiagnostic utility. A program that is run by the
customer engineer to test the machine.
microinstruction. A basic or elementary machine
instruction.
microprogram. A group of microinstructions that
when executed performs a preplanned function.
The term microprogram represents a dynamic
arrangement or selection of one or more groups of
microinstructions for execution to perform a particular
function. The term microcode represents
microinstructions used in a product as an alternative to
hard-wired circuitry to implement certain functions of a
processor or other system component.
MIM. Media information message.
mm. Millimeter.
modifier. That which changes the meaning.
mount a device. To assign an I/O device with a
request to the operator.
MP. Microprocessor.
ms. Millisecond.
MSG. Message.
multipath. Pertaining to using more than one path.
N
N/A. Not applicable.
node. In a network, a point at which one or more
functional units connect channels or data circuits.
NVS. Nonvolatile storage. A storage device whose
contents are not lost when power is cut off.
O
oersted. The unit of magnetic field strength in the
unrationalized centimeter-gram-second (cgs)
electromagnetic system. The oersted is the magnetic
field strength in the interior of an elongated, uniformly
wound solenoid that is excited with a linear current
density in its winding of one abampere per 4π
centimeters of axial length.
offline. Pertaining to the operation of a functional unit
without the continual control of a computer. Contrast
with online.
online. Pertaining to the operation of a functional unit
that is under the continual control of a computer.
Contrast with offline.
OPER. Operation.
ov. Over voltage.
I-5
Glossary