IBM TS4300 3555 User Manual page 248

Media-type identifier
Pertaining to the bar code on the bar code label of the IBM Ultrium tape cartridge, a two-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,
which is 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 micro instructions that when run completes a planned function.
The term microprogram represents a dynamic arrangement or selection of one or more groups of
micro instructions for execution to complete a particular function. The term microcode represents
microinstructions that are 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.
Monitor
The Monitor role is an interchangeable term corresponding to the User role. The Monitor role has
viewing privileges to the unit, but is not able to make configuration changes.
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.
218 IBM TS4300 Tape Library Machine Type 3555: User's Guide