User's Guide

Glossary

Quantum P4000 and P7000 Libraries User’s Guide 139

DLT Digital Linear Tape technology is owned, developed, and

manufactured by Quantum Corporation. DLT tape drives use half-inch

wide tape. DLT 8000 tape drives record on 208 tracks (uncompressed).

Elements SCSI designation for any device or bin in the library that can

hold a cartridge. SCSI elements include storage bins, tape drives, load

port bins, and the gripper.

EMI Electro-Magnetic Interference refers to unwanted electrical noise

present on a power line. This noise may “leak” from the power lines and

affect equipment that isn't even connected to the power line. Such

“leakage” is called a magnetic field. Magnetic fields are formed when

unwanted noise voltages give rise to noise currents. Such noise signals

may adversely affect electronic equipment and cause intermittent data

problems.

ESD Electrostatic Discharge

Gripper A mechanical component of the extension axis assembly

(robotics) which grips and holds a tape cartridge in transit

GUI An touch screen Graphical User Interface is made up of bit-mapped

graphics displays resembling tabs and buttons, designed to act as the

library’s main console for receiving information and inputting

commands.

Host The device or devices to which the library is connected.

HVD High Voltage Differential or HVD (also called Differential SCSI).

The benefit of using HVD cabling is that it works well in noisy areas and

can reach up to 25 meters in distance. Quantum DLT 8000, SDLT 220, and

SDLT 320 tape drives can be HVD or LVD devices.

IEC The International Electrotechnical Commission is based in Geneva,

Switzerland.

Load port The revolving assembly on a front door of enterprise libraries

that incorporates a revolving drum and tape cartridge bins (stationary or

removable) for loading and unloading tape cartridges.

LTO Linear Tape-Open is a tape drive specification backed by IBM,

Hewlett-Packard, and Certance.