HP 12000 HP StorageWorks 12000 Gateway Virtual Library System User Guide (AH81 - Page 249

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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. Accelerated deduplication appliance automigration A method of deduplication that uses object-level differencing technology. 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. 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 chassis CLI 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. A metal box that houses computer hardware. 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. HP StorageWorks 12000 Gateway Virtual Library System User Guide 249

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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.
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.
HP StorageWorks 12000 Gateway Virtual Library System User Guide
249