User's Guide
Quantum A-Series Tape Drives User’s Guide 79
Glossary
The following is an alphabetical list of specialized words and 
technical terms with their definitions, commonly used in the tape 
drive and tape media industry.
A
Access 
(v.) To read, write, or update information on a storage medium, 
such as magnetic media. (n.) The operation of reading, writing, or 
updating stored information.
Access Time The interval between the time a request for data is made by 
the system and the time the data is available from the tape drive.
Advanced PRML Advanced Partial Response Maximum Likelihood. The 
advanced PRML channel technology provides high-encoding 
efficiency recording densities for greater capacity and 
performance.
Allocation The process of assigning particular areas of the media to 
particular data or instructions.
AMP Media Advanced Metal Powder Media. A state-of-the-art media 
first designed for Super DLTtape. It incorporates durable metal 
powder technology for high-density data storage and embedded 
non-magnetic information for head tracking.
API  Application Programming Interface.










