Quantum DLTtape SDLT 600, Руководство пользователя

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Glossary
SDLT 600 Product Manual 116
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.
Bad Data Block
A block that cannot reliably hold data because of a
media flaw or damaged format markings.
Base Plate
An aluminum die casting that acts as the support platform
for the other modules and for the tape drive enclosure. The base plate
includes the precision mounting holes used to install SDLT tape drives
into a server or tape library.
Bezel
(Also known as the faceplate.) A plastic panel that extends the face
of a tape drive so that it covers a computer’s tape drive bay opening. The
internal model of tape has two bezels: a library bezel and an internal
bezel.
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.
Block
A sector or group of sectors. SDLT 600 supports block sizes up to
16 MB.
BOM or BOT
Beginning of Media or Beginning of Tape. The physical
beginning of the media.
BRC
Backward-read Compatibility is the ability of a current tape drive
product to read cartridges written on earlier model tape drives.
BSMI
Bureau of Standards, Metrology, and Inspection (Taiwan).
Buckling Mechanism
T
he buckling mechanism engages the media
leaders on cartridge 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 tape drive or some other peripheral device.
Bus
The part of a chip, printed circuit board, or interface designed to
send and receive data.
C
C
The degree Celsius (°C) is a unit of temperature.
Cache
Specialized RAM used as a buffer between a fast CPU or I/O
channel and storage which has a relatively slow access time (for example,
cartridge or diskette), to avoid slowing down the former.