Quantum 1200 Series DAT Autochanger Manual de usuario descargar pdf (Pagina 133)

Glossary

SDLT 600 Product Manual 117

Cartridge Receiver

At media insertion, the cartridge receiver assembly is

responsible for guiding the media into its operating position, opening the

door, unlocking the cartridge brakes, and securing the media for

operation. At media ejection, the cartridge receiver assembly reverses the

process and automatically ejects the cartridge a fixed distance from the

front of the tape drive.

CE Council of Europe.

Compressed Capacity Capacity after data has been processed, using

either software or hardware, to reduce storage space while maintaining

data integrity. (See also Data Compression.)

CFR Code of Federal Regulations (United States).

CSA Canadian Standards Association, also known as CSA International.

CTM Cartridge Tape Module. The main function of the SDLT’s CTM is to

provide the magnetic recording media used by the tape drive to store

customer information. The CTM also provides the protective cartridge,

which allows the media to be removed and stored safely.

CUP Code Update (a firmware update).

Data Compression A process that reduces the amount of storage space

required to hold a particular block of data. Data transfer speed and total

media capacity are affected by the data compression achieved. In

accordance with industry practice, a typical compression ratio is 2:1 of

data storage. Actual compression ratios achieved depend on the

redundancy of data files being written.

dB A Decibel is a logarithmic unit of sound intensity; 10 times the

logarithm of the ratio of the sound intensity to some reference intensity.

DC Direct Current is the continuous flow of electricity through a

conductor such as a wire from high to low potential.

DCM The Data Control Module provides the path and guides for all

media motion inside the tape drive and to write data to and read data

from the media.

Device According to the SCSI specification, multiple SCSI devices can be

connected to a single SCSI bus. Each SCSI device contains a SCSI ID

number that can be set in the range 0 to 15.

Device Driver A low-level (usually kernel-mode) operating system

component that enables a PC to communicate with peripheral devices

such as printers, CD-ROMs, and tape drives. Each kind of device requires

a different driver.

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Quantum 1200 Series DAT Autochanger Manual de usuario Pagina 133