HP StorageWorks 6000-series Virtual Library System User Guide (AH809-96049, September 2010)

Glossary
This glossary defines terms used in this guide or related to this product and is not a comprehensive
glossary of computer terms.
Accelerated
deduplication
A method of deduplication that uses object-level differencing technology.
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.
automigration The process in which the virtual tape library acts as a tape copy engine that
transfers data from virtual cartridges on disk to a physical tape library connected
to the virtual tape device.
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.
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.
chassis A metal box that houses computer hardware.
CLI Command-line interface. An interface comprised of various commands which
are used to control operating system responses.
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.
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.
data restore To recover data files stored on virtual or physical media.
data retention
period
The length of time data is retained (stored) on virtual or physical media.
data striping The storing of sequential blocks of incoming data on all the different disk drives
in a virtual disk. This method of writing data increases virtual disk throughput
because multiple disks are working simultaneously, retrieving and storing data.
RAID 0, 3, 5, 6, 10, and 50 use striping.
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