Quantum EC-LLDAA-YF-B Guía de usuario descargar pdf (Pagina 194)

Glossary

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Super DLTtape drives into a server or tape library. The TCM acts

as the prime base plate for the Super DLTtape system.

bus A communication pathway between components in a computer

system.

C C Celsius. A measurement of temperature where 0 degrees is the

freezing and 100 degrees is the boiling point of water.

cartridge receiver At tape insertion, the cartridge receiver assembly is

responsible for guiding the tape into its operating position,

opening its door, unlocking the cartridge brakes, and securing

the tape for operation. At tape ejection, the cartridge receiver

assembly reverses the process and automatically ejects the tape

a fixed distance from the front of the drive.

compressed capacity Capacity after data has been processed to

reduce storage space while maintaining data integrity using

either software or hardware.

cartridge tape module (CPTM) The Super DLTtape CTM contains the

AMP media feature of Quantum’s LGMR technology. The main

function of the CTM is to provide the magnetic recording media

used by the drive to store customer information. The CTM also

provides the protective cartridge that allows the media to be

removed and stored safely.

D data compression A process that reduces the amount of storage

space required to hold a particular block of data. Data transfer

speed and total tape 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 are dependent on the redundancy

of data files being recorded.

data control module (DCM) The DCM contains several of the

functions and features of Quantum’s LGMR technology, which is

at the heart of the Super DLTtape technology. Of the five

technologies that constitute the LGMR technology, two are

found in the DCM. These are the POS and the MRC heads. The

main functions of the DCM are to provide the path and guides

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Quantum EC-LLDAA-YF-B Guía de usuario Pagina 194