Compaq StorageWorks ESL9000 Series Reference Manual page 145

Glossary-3
byte
The basic unit of computer memory, large enough to hold one character. A byte is
composed of eight bits.
calibration
A process used by the library robotics to determine the exact position of storage, data
transfer, and import/export elements.
cartridge
A case containing a supply reel with magnetic tape used as media for reading and writing
computer data.
CHM
Cartridge Handling Mechanism (see gripper).
command
A user-initiated signal given to a computer program that initiates, terminates, or otherwise
controls the execution of a specific operation. In a menu-driven system such as the library
control panel, choose commands by pressing on-screen buttons.
compression
The process of encoding data to take up less storage space on magnetic tape. Compression
can be carried out by the host computer (software compression) or by the drive (hardware
compression).
Contrast buttons
Control panel buttons in the upper right corner of the display that adjust the contrast of the
control panel screen.
control panel
The panel on the front of the library that contains the library status displays.
data transfer element
The SCSI designation for a disk or tape drive.