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Bus condition:
Bus phase:
CCS:
CDB:
Command:
Disconnect:
Initiator:
Logical unit:
LUN:
Message:
Reconnect:
SCSI:
SCSI device:
SCSI ID:
Sense code:
Glossary
Asynchronous condition for causing SCSI bus status transition. There are
two types of bus conditions, ATTENTION and RESET.
An SCSI bus state. The SCSI bus is in one of the following phases: BUS
FREE,
ARBITRATION,
INFORMATION TRANSFER. The INFORMATION TRANSFER phase
is divided into DATA IN, DATA OUT, COMMAND, STATUS,
MESSAGE IN, and MESSAGE OUT phases depending on the type of
information being transferred.
Common Command Set.
stipulated by a working committee of ANSI. Functions necessary for
direct access devices are defined.
Command Descriptor Block. A group of data that describes the command
for I/O and is transferred from an initiator to a target.
Issued to a target to direct an input/output operation and written as CDB.
Operation performed by the target to free itself from the SCSI bus and the
initiator temporarily when SCSI bus operation becomes unnecessary
during command processing.
SCSI device that has initiated an input/output operation on the SCSI
device. This is abbreviated as INIT.
Simple unit of equipment that can be directed to perform one I/O
operation on the SCSI bus.
Logical unit number used to identify a logical unit.
Information that controls a series of bus phases and I/O sequence between
the initiator and the target on the SCSI bus.
Operation performed by the target to reconnect itself with the initiator
when operation on the SCSI bus becomes necessary after disconnection.
Small computer system interface. An input/output interface standardized
by the American National Standards Institute (ANSI).
number: ANSI X3.131-1986]
General term for a device (Input/output device, I/O controller, and host
adapter, etc.) connected to an SCSI bus.
Physical device address used to identify an SCSI device on the SCSI bus.
This number is specific to each SCSI device. SCSI IDs are #0 to #7, each
referenced by a unique bit on the data bus.
One byte of code added to the sense data to identify the type of detected
error.
C141-E078-02EN
SELECTION,
RESELECTION,
The standard SCSI logical specification
or
[Standard
GL - 1
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