Quantum 1200 Series DAT Autochanger Guía de usuario descargar pdf (Pagina 257)

SDLT 600 SCSI Interface Guide Chapter 4: SCSI Commands

81-81200-02 REV A01 January 2005 4-215

The REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS command may return any of the

values shown in Figure 4-119.

Figure 4-119. TASK MANAGEMENT FUNCTIONS Command Parameter Data — Data Format

Table 4-126. REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS Command

Descriptor Block — Field Descriptions

Field Description

Service

Action

A service action of 0Dh identifies this as the REPORT SUPPORTED TASK

MANAGEMENT FUNCTIONS command.

Allocation

Length

Specifies the number of bytes allocated for the returned parameter data. The Allocation

Length value is at least 4 bytes. If the allocation length is less than 4, the command shall be

terminated with a CHECK CONDITION status, the Sense Key shall be set to ILLEGAL

REQUEST, and the Additional Sense Code shall be set to INVALID FIELD IN CDB; this

is not considered an error. The format of the parameter data is shown in Figure 4-119.

Bit

Byte

7 6 5 4 3 2 1 0

0 ATS ATSS CACAS CTSS LURS QTS TRS WAKES

1 – 3

(MSB)

Reserved

(LSB)

Table 4-127. TASK MANAGEMENT FUNCTIONS Command Parameter Data — Field

Descriptions

Field Description

ATS Abort Task Supported. Not supported. Always set to 0.

ATSS Abort Task Set Supported. Always set to 1.

CACAS Clear ACA Supported. Not supported. Always set to 0.

CTSS Clear Task Set Supported. Not supported. Always set to 0.

LURS Logical Unit Reset Supported. Always set to 1.

QTS Query Task Supported. Not supported. Always set to 0.

TRS Target Reset Supported. Always set to 1.

WAKES Wakeup Supported. Not supported. Always set to 0.

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Quantum 1200 Series DAT Autochanger Guía de usuario Pagina 257