User's Manual

Glossary
SuperLoader 3 Autoloader User’s Guide 180
Hierarchical Storage Management (HSM)
A method of storing massive
amounts of data in tape libraries that allows for easy and rapid
recall of the material. Due to the lowering cost of disk drives,
HSM has yet to reach its full potential.
HTTP Hypertext Transfer Protocol. A protocol for exchanging files
between computers connected to the Internet.
Hz Hertz. A unit of frequency measurement that equals 1 cycle per
second. Computers and electronic devices are often measured in
kilohertz (kHz), megahertz (MHz), gigahertz (GHz), or terahertz
(THz).
I
ISV
Independent Software Vendor.
image backup A backup option that takes a “snapshot” of an entire
system by writing a volume image to tape sector-by-sector, rather
than file-by-file. This method of backup is very fast and allows
companies to backup critical information in a limited backup
window.
interface A hardware or software protocol, contained in the electronics
of the tape controller and tape drive that managed the exchange
of data between the drive and computer. The most common
interfaces for small computer systems are AT (IDE) and SCSI.
internal drive A drive mounted inside one of a computer’s drive bays.
Internet A worldwide network of computer servers originally developed
by the federal government as a communication system in the
event of nuclear war or other wide-scale disaster.
intranet A private version of the Internet that provides a cost-effective
way to publish critical information and provide an interactive
communication path for heterogeneous systems.
IP Internet Protocol. A communications protocol which contains a
network address and routes a message to a different network.
J
jumper
A tiny connector box that slips over two pins that protrude from
a circuit board. The jumper can be moved to change electrical
connectors. When in place, the jumper connects the pins
electrically. Some board manufacturers use dual in-line package
(DIP) switches instead of jumpers.