Supported Scsi Messages; Abort (06H); Bus Device Reset (0Ch) - Quantum SuperLoader DLT User Manual

Supported SCSI Messages

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Abort (06h)

Bus Device Reset
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(0Ch)
Following are descriptions of each of the messages supported by
the SuperLoader.
This message is sent from the initiator to the target to clear the
current I/O process on the selected unit. The target goes directly to
the BUS FREE phase after successful receipt of this message.
Current settings of MODE SELECT parameters and reservations
are not affected. Commands, data, and status for other initiators
are not affected.
This message can be sent to a logical unit that is not currently
performing an operation for the initiator. If no unit has been
selected, the target goes to BUS FREE phase and no commands,
data, or status on the target are affected.
If a command that causes movement of the media changer has
started, the movement will complete and STATUS will not be sent
to the initiator.
The BUS DEVICE RESET message is sent from an initiator to direct
the SuperLoader to clear all I/O processes on the drive. The
message causes the SuperLoader to execute a hard reset, leaving it
as if a Bus Reset had occurred.
The SuperLoader creates a Unit Attention condition for all
initiators after accepting and processing a Bus Device Reset
message. The additional sense code is set to POWER ON, RESET,
or BUS DEVICE RESET OCCURRED.
If a command that causes movement of the media changer has
started, the movement will complete and STATUS will not be sent
to the initiator.
Quantum ATL SuperLoader Software Interface Guide
Chapter 2 Messages
Supported SCSI Messages
2
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