Fujitsu MBA3073NP User Manual download pdf (Page 127)

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.

Bus phase

The name of SCSI bus state. The SCSI bus can be either in the BUS FREE,

ARBITRATION, SELECTION, RESELECTION or INFORMATION

TRANSFER phase. The INFORMATION TRANSFER phase is divided into

subphases such as DATA IN, DATA OUT, COMMAND, STATUS,

MESSAGE IN, and MESSAGE OUT.

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.

Disconnect

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.

Initiator

This is an SCSI device which initiates input and output operations on the SCSI

bus.

Message

Information that controls a series of bus phases and I/O sequence between the

initiator and the target on the SCSI bus.

Logical unit

Simple unit of equipment that can be directed to perform one I/O operation on

the SCSI bus.

LUN

Logical unit number used to identify a logical unit.

Reconnect

Operation performed by the target to reconnect itself with the initiator when

operation on the SCSI bus becomes necessary after disconnection.

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Fujitsu MBA3073NP User Manual Page 127