Fujitsu MAN3735 Manuale Utente

C141-E124-01EN

GL - 1

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.

Disconnect................. This is processing which temporarily frees the connected state of the target with the

SCSI bus and the initiator at the point in the target's command processing execution
process when operations on the SCSI bus are not needed.

Initiator  (INIT) ......... This is a SCSI device which initiates input and output operations on the SCSI bus.  In

this manual, initiator has been abbreviated to "INIT."

Logical Unit............... This is the device unit which is the object of input/output operations on the SCSI bus.

LUN .......................... Logical Unit Number

This is the serial number which identifies a logical unit.

Message..................... This is control information that is delivered and received between the initiators and

targets operating on the SCSI bus for controlling a series of bus phases and
input/output operation execution sequences.

Reconnect .................. For a target which has executed disconnect processing, this is processing which

reconnects tot he initiator at the point when operations on the SCSI bus again become
necessary.

SCSI  ......................... Small Computer System Interface

The standardized input/output interface of the American National Standards Institute
(ANSI).  [Standard No.:  ANSI X3. 131-1986]