Tandberg Data SATA DLT-V4 Internal Black 7301709200 사용자 설명서

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7301709200
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Glossary
DLT-V4 Product Manual
62
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 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.
Differential   
A term referring to the electrical characteristics of the signal used on 
the SCSI bus interface. Differential signals minimize the effect of common mode 
signal noise and allow the SCSI bus to operate reliably over greater distances at a 
higher speed.
DLT   
Digital Linear Tape.
DLTIce   
The manufacturer’s firmware compliance management function of 
DLTSage, which provides secure archival functionality to the tape drive and tape 
cartridge.
DLTSage   
The manufacturer’s suite of preventative maintenance diagnostic 
software tools that enables users to more simply mange tape storage 
environments. 
DLZ   
Digital Lempel-Ziv 1 Algorithm is named after Abraham Lempel and Jacob 
Ziv. It is a data compression technique used in all tape drives.
E
EEC   
European Economic Community.
EEPROM   
Electronically Erasable Programmable Read-Only Memory. An 
integrated circuit memory chip that can store programs and data in a non-volatile 
state. These devices store firmware in tape drives, and can be erased and 
reprogrammed with new data.