Quantum DX3000 and DX5000 User’s Guide
107
I
IEC
The International Electrotechnical Commission is based in
Geneva, Switzerland.
L
LTO
Linear Tape-Open (LTO) technology was developed jointly by
HP, IBM and Quantum to provide a clear and viable choice in an
increasingly complex array of tape storage options.
LTO technology is an "open format" technology, which means
that users will have multiple sources of product and media. The
"open" nature of LTO technology also provides a means of
enabling compatibility between different vendors' offerings.
The Ultrium format is the "high capacity" implementation of LTO
technology.
M
MSBF
Mean Swaps Before Failure
MTBF
Mean Time Between Failures
MTTR
Mean Time To Repair
N
NEMA
National Electrical Manufacturers Association
P
PCI
The PCI bus typically runs at speeds of 33 MHz or 66 MHz and is
usually 32 bits wide. This means that it passes 32 bits of data
simultaneously as if down 32 separate wires. Some of the most
recent computers include "wider" 64-bit PCI buses, and already
certain very high-end video capture cards offer improved
performance if connected to a 64-bit PCI bus.
R
RAID
Redundant Array of Independent Disks is a technology through
which several physical storage disks are grouped into an array
that appears to an operating system as one or more physical
devices.
RS-232C
Short for Recommended Standard-232C, a standard interface
approved by the Electronic Industries Association (EIA) for
connecting serial devices. This standard is for
ASYNCHRONOUS TRANSFER between computer equipment
and accessories. Data is transmitted bit by bit in a serial fashion.
The RS-232 standard defines the function and use of all 25 pins of
a DB-25 type connector.
