Glossary – HP StorageWorks 1000i Virtual Library System User Manual

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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 is 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 time 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 port cards.

cartridge

(1) A removable storage module that contains magnetic or optical disks,

magnetic tape or memory chips. (2) Software emulation of the behavior and

contents of a physical tape cartridge 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

interface (CLI)

time typically through a console screen.

data backup

The activity of copying ﬁles or databases so that they will be preserved in case

of equipment failure or other catastrophe. The retrieval of ﬁles you backed up is

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 bandwidth 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 media.

data restore

To recover data ﬁles stored on virtual or physical media.

data retention pe- The length of time data is retained (stored) on virtual or physical media.

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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