medium
A physical material in or on which data
might be represented, such as magnetic
tape.
megabyte (MB)
1 000 000 bytes.
metal-particle tape
In the LTO and 3592 tape cartridges, tape
that uses small, pure metal particles
(rather than oxide coatings) in the
magnetic layer.
meter In the metric system, the basic unit of
length; equal to approximately 39.37
inches.
MiB One mebibyte (MiB) = 1,048,576 bytes.
MIB See Management Information Base.
middleware
A vague term that refers to the software
between an application program and the
lower-level platform functions.
micron
One millionth of a meter (.000001 m).
Microsoft Systems Management Server (SMS)
and Clustered Server Environments
A solution from Microsoft that
automatically detects system or network
failures in Windows operating systems
and eliminates a single point of failure by
managing failover to a recovery processor.
mid-range systems
A set of multi-user servers with a hard
disk capacity of between 50 GB - 250 GB.
mixed drive types
The concept of using both LTO and 3592
tape cartridges in the TS4500 tape library.
A library can consist of frames that house
all LTO tape cartridges or all 3592 tape
cartridges, but the two types of cartridges
cannot be mixed in a single frame.
However, both types of cartridges might
be inserted or removed from the library
through the base frame, if a lower I/O
station is installed for the 3592 tape
cartridges.
mixed media configuration
Different media and drive technologies,
such as the LTO tape drive and the 3592
tape drive. LTO 1, LTO 2, and LTO 3
drives and media are not considered
mixed media, but are considered different
generations of the same type of media.
Model J1A
See IBM 3592 tape drive Model J1A.
mount The act of making a tape available for
processing by a specific tape device. A
mount consists of removing the cartridge
from a drive, returning it to its storage
slot, collecting another cartridge from a
storage slot, moving it to the drive, and
loading it into the drive.
mount/demount cycle
See mount.
mounted
The state of a tape while it is available for
processing by a specific tape device.
mount throughput
The number of cartridges that a tape
library can mount in a one-hour period.
N
N A measure of the electrical power load in
a system. If there are N loads in the
system, N power supplies are required to
power all of the loads.
N/A Not applicable.
native data capacity
The amount of data that can be stored
without compression on a tape cartridge.
NetView
®
(1) Pertaining to an IBM licensed program
that is used to monitor a network,
manage it, and diagnose its problems. The
NetView licensed program can be used to
provide network management services for
OSI Communications Subsystem. (2) A
network management product that can
provide automated operations and rapid
notification of events.
network
A configuration of data processing
devices and software that is connected for
information interchange.
network server
In a local area network, a personal
computer that provides access to files for
all of the workstations in the network.
node In Fibre Channel technology, a
communicating device.
Glossary 181
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