Quantum P4000 Series, Руководство пользователя

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Glossary
Quantum P4000 and P7000 Libraries User’s Guide 139
D
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).
E
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
G
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.
H
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.
I
IEC
The International Electrotechnical Commission is based in Geneva,
Switzerland.
L
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.