Quantum sdlt 220 Guía Del Usuario
Glossary
SDLT 220 and SDLT 320 Product Manual
G-2
March 2004
81-85002-01
B
Backup
A copy of a file, directory, or volume on a separate storage device
from the original, for the purpose of retrieval in case the original
is accidentally erased, damaged, or destroyed.
from the original, for the purpose of retrieval in case the original
is accidentally erased, damaged, or destroyed.
Bad Data
Block
Block
A block that cannot reliably hold data because of a media flaw or
damaged format markings.
damaged format markings.
Base Plate
An aluminum die casting that acts as the support platform for the
other modules and for the drive enclosure. The base plate
includes the precision mounting holes used to install SDLT
drives into a server or tape library.
other modules and for the drive enclosure. The base plate
includes the precision mounting holes used to install SDLT
drives into a server or tape library.
Bezel
(Also known as the faceplate.) A plastic panel that extends the
face of a drive so that it covers a computer’s drive bay opening.
The bezel usually contains a drive-activity LED.
face of a drive so that it covers a computer’s drive bay opening.
The bezel usually contains a drive-activity LED.
BIOS
Basic Input/Output System. A set of routines that work closely
with the hardware to support the transfer of information between
various elements of the system, such as memory, disks, and
peripheral devices.
with the hardware to support the transfer of information between
various elements of the system, such as memory, disks, and
peripheral devices.
Block
A sector or group of sectors. By default, a sector of data consists
of 512 bytes.
of 512 bytes.
BOT
Beginning of Tape. The physical beginning of the tape.
BRC
Backward-Read Compatibility. The ability of a current drive
product to read tapes written on earlier model drives.
product to read tapes written on earlier model drives.
Buckling
Mechanism
Mechanism
The buckling mechanism engages the tape leaders upon cartridge
load and disengages them on cartridge unload.
load and disengages them on cartridge unload.
Buffer
An area of RAM reserved for temporary storage of data that is
waiting to be sent to a device. The data is usually on its way to or
from the hard disk drive or some other peripheral device.
waiting to be sent to a device. The data is usually on its way to or
from the hard disk drive or some other peripheral device.
Bus
The part of a chip, circuit board, or interface designed to send
and receive data.
and receive data.