IBM TS2900 Setup, Operator, And Service Manual page 244

K
kilogram (kg). One thousand grams (approximately
2.2 pounds).
km. kilometer. 1000 Meters, Approximately 5/8 mile.
L
LAN. Local area network. A computer network within
a limited area.
LCD. See liquid crystal display.
LDAP. Lightweight Directory Access Protocol. This
allows the library to use login and password information
stored on a server to grant access to the library
functionality.
LDI. Library Drive Interface.
LED. Light-emitting diode.
library certification. In cryptography, a certificate
provided by the library.
library-managed encryption. Tape encryption
controlled by the tape library.
library recovery. Library firmware function that
generally retries failed operations up to three times
before posting a failure or, in some situations,
proceeding with an operation that can be completed in
an alternative manner.
Linear Tape-Open (LTO). A type of tape storage
technology developed by the IBM Corporation,
Hewlett-Packard, and Certance. LTO is an "open
format" technology, which means that its users will have
multiple sources of 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 is the key storage consideration. Ultrium
tape cartridges have a capacity of up to 800 GB (1600 GB
with 2:1 hardware compression).
liquid crystal display (LCD). A low-power display
technology used in computers and other I/O devices.
loadable. Having the ability to be loaded.
LME. Library Managed Encryption.
LTO. See Linear Tape-Open.
LVD. SCSI Bus Low Voltage Differential.
I-6
TS2900 Tape Autoloader Setup, Operator, and Service Guide
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 used as an authority in a given job
and that is relatively permanent, even though its
contents may change. Synonymous with main file.
Maximum Transmission Unit (MTU). The size of the
largest packet that a network protocol can transmit.
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. Part of the bar code on an IBM
Ultrium Tape Cartridge that identifies the type of
cartridge (for example "L1"). "L" identifies cartridges
that can be read by devices that incorporate LTO
technology. The numeral indicates the generation of the
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 used by SNMP.
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.