Quantum DLT-S4 Betriebsanweisung PDF herunterladen (Seite 42)

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Chapter 2 Task Management

Task Management Function

DLT-S4 Interface Reference Guide 8

CLEAR TASK SET 2 CLEAR TASK SET clears all commands for requesting initiator. CLEAR

TASK SET

can clear multiple commands, when command queuing is in

effect.

ABORT TASK 2 This task management function causes the drive to clear the current I/O

process on the selected unit. Buffered (cached) write operations are

completed if possible. The current settings of

MODE SELECT parameters

and reservations are not affected. Commands, data, and status for other

initiators are not affected.

This task management function can be sent to a logical unit that is not

currently performing an operation for the initiator.

If a

WRITE command is in progress and STATUS has not been sent to the

initiator when the drive receives this task management function, some or

all of the data for this command may be written to the medium.

ABORT TASK SET 2 ABORT TASK SET aborts all commands for the requesting initiator.

ABORT TASK SET can clear multiple commands, when command queuing

is in effect.

QUERY TASK 2 Supported in the SAS protocol only. It is used as part of the protocol error

recovery process to determine if a command was received by the drive or

was discarded due to an error detected at the protocol layer.

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