Quantum Scalar 218FC, Руководство пользователя

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Glossary 105
Address See SCSI Addressing .
Arbitrated Loop See Fibre Channel — Arbitrated Loop .
AL_PA Arbitrated Loop Protocol Address.
Area The second byte of the N_Port Identifier.
Baud The encoded bit rate per second.
Bus A means of transferring data between modules and adapters or between an
adapter and SCSI devices. For a SCSI bus definition, see
SCSI Bus .
Cartridge
A storage medium item. A cartridge is sometimes called a tape or cassette
and is capable of storing vast amounts of magnetically written data. The
DLT drives in the Scalar Library uses DLTtape IV cartridges.
Channel A general term for a path on which electronic signals travel.
Cleaning cartridge Media used to clean the drive heads and tape path.
Clusters Two or more computers sharing the same resources on a communication
link.
Device See FC Device or SCSI Device .
Diagnostics A menu name. Accessed through the Configuration Program, it is used to
select and test the fibre channel subsystem of the Scalar 218FC hardware.
A menu name. Accessed through the Off-Line Mode menu, it is used to
manually test the robotics subsystem of the Scalar 218FC hardware.
Differential An electrical signal configuration using a pair of lines for transfer. The
advantage of differential compared to single-ended is a relative high
tolerance for common-mode noise and little crosstalk when used with
twisted pair cables.
DLT DLT™ (Digital Linear Tape) is the industry-standard data interchange
recording format that supports the use of DLT for computer applications.
DLT media cartridge Media used with the DLT tape drive in the Scalar Library unit. It is a 4-
inch cartridge containing either 1100 or 1800 feet of ½-inch metal-particle
tape. These cartridges require no formatting or other media conditioning
before use.
DLT drive
Tape drive used in the Scalar 218FC.
Domain
The most significant byte in the N_Port Identifier for the FC device. It is
not used in the FC-SCSI hardware path ID. It is required to be the same
for all SCSI targets logically connected to a FC adapter.