Fujitsu 80, Scsi Logical Interface Specifications

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C141-C010 GL-1
Glossary
Additional Sense Code
This is a 1-byte code displayed in the sense data and is information which specifies
the type of error that was detected.
Axial acceleration
Acceleration in the recording layer along the line perpendicular to the disk reference
surface at a specified rotation speed. Axial acceleration is detected by optical means.
Bus Condition
This is an asynchronous condition for changing the status transition on the SCSI bus.
There are two types, the ATTENTION condition and the RESET condition.
Bus Phase
This is the name given to the SCSI bus state. The SCSI bus is in one state or another,
the BUS FREE phase, the ARBITRATION phase, the SELECT phase, the
RESELECTION phase or the INFORMATION TRANSFER phase. In addition, the
INFORMATION TRANSFER phase is subdivided into the DATA IN, DATA OUT,
COMMAND, STATUS, MESSAGE AND MESSAGE OUT phases in accordance
with the type of information being transferred in the INFORMATION TRANSFER
phase.
CCS
Common Command Set
This is the standard form of SCSI logical specifications stipulated by the operations
subcommittee of the American National Standards Institute (ANSI) which stipulates
functions which a direct access device (magnetic disk, etc.) should support.
CDB
Command Descriptor Block
A series of data which describes commands related to input/output operations, sent
from the initiator to the target.
Command
This is a command to a target to perform an input/output operation, and it is described
as the CDB.