Owner's manual

Glossary
This glossary defines terms used in this guide or related to this product and is not a comprehensive
glossary of computer terms.
appliance An intelligent device programmed to perform a single well-defined function.
Appliances differ from general-purpose computers in that their software is
normally customized for the function they perform, pre-loaded by a vendor,
and
not alterable by the user.
autoloader An autoloader is a tape storage device that automatically loads tape cartridges
using a robotic mechanism. An autoloader can load cartridges sequentially or
in
some specified order.
automigration Data intended for tape storage is written to virtual tape and after the backups
are complete written to physical tape in the background. One virtual tape
emulates one physical tape to the host system. Data i s held on the virtual tape,
which greatly improves restore times over the slow loading process of a robotic
library. The VLS will be able to perform automigration in the future.
bandwidth Also known as data transfer rate. The amount of data that can be carried from
one
point to another in a given tim e period. A real communications path usually
consists of a succession of links, each with its own bandwidth. If one of these is
much slower than the rest, it is said to be a bandwidth bottleneck.
bezel A removable panel that covers empty drive bays and por t cards.
cartridge (1) A removable storage module that contains m agnetic or optical disks,
magnetic tape or mem ory chips. (2) Soft ware emulation of the behavior and
contents of a physical tape car tridge on alternate media, such as disk, is called
a
virtual tape or virtual media. See also virtual tape.
chassis A metal box that houses computer hardware.
command line A user interface to an application that accepts typed-in commands one line at a
interfac e (CLI) time t ypically through a console screen.
data backup The activity of copying files or databases so that they will be preserved i n case
of equipment failure or other catastrophe. The retrieval of filesyou backedupis
called restoring files. See also data restore.
data compression A software or hardware process that shrinks data files so that they occupy less
storage space, and can be transmitted faster and easier. Data is encoded
so it
takes up less storage space and less bandw idth for transmission. See
also bandwidth.
data migration The process of moving data from one storage device to another, such as
migrating data from virtual media to physical m edia.
data restore To recover data files stored on virtual or phys ical media.
data retention pe - The leng th of time da ta is retained (stored) on virtual or physical m e dia.
riod
DHCP DHCP (Dynamic Host Configuration Protocol) is a communications protocol that
lets
network administrators centrally manage and automate the assignment of
Internet Protocol (IP) addresses in an organization’s network.
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