Quantum 1200 Series DAT Autochanger Betriebsanweisung PDF herunterladen (Seite 36)

Supported SCSI Messages SDLT 600 SCSI Interface Guide

3-8 January 2005 81-81200-02 REV A01

3.2.8 LOGICAL UNIT RESET (17h)

This message causes the drive to execute a logical unit reset function on the logical unit identified by

the last IDENTIFY message. The logical unit reset function is the same as would be performed

following a BUS DEVICE RESET message except only the logical unit selected is affected. The drive

enters the BUS FREE phase as part of processing this message and aborts all commands to the selected

logical unit.

Table 3-7. Drive’s Response to INITIATOR DETECTED ERROR Message

Bus Phase Drive Response

SELECTION The drive discards the INITIATOR DETECTED ERROR message and then

enters the BUS FREE phase.

COMMAND The drive discards any Command Descriptor Block bytes fetched from the

initiator, sets the Sense Key to ABORTED COMMAND, and sets the

Additional Sense Code to INITIATOR DETECTED ERROR MESSAGE

RECEIVED. The drive then sends the CHECK CONDITION status and the

TASK COMPLETE message and then enters the BUS FREE phase.

DATA The drive discards the INITIATOR DETECTED ERROR message, sets the

Sense Key to ABORTED COMMAND, and sets the Additional Sense Code to

INITIATOR DETECTED ERROR MESSAGE RECEIVED. The drive then

sends the CHECK CONDITION status and the TASK COMPLETE message

and then enters the BUS FREE phase.

STATUS The drive sends a RESTORE POINTERS message, returns to the STATUS

phase, resends the STATUS command, and continues the I/O process.

MESSAGE

The drive discards the INITIATOR DETECTED ERROR message, sets the

Sense Key to ABORTED COMMAND, and sets the Additional Sense Code to

INITIATOR DETECTED ERROR MESSAGE RECEIVED. The drive then

sends the CHECK CONDITION status and the TASK COMPLETE message

and then enters the BUS FREE phase.

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Quantum 1200 Series DAT Autochanger Betriebsanweisung Seite 36